{"title":"Chemical","description":"\u003c!-- META (paste these into Shopify → Search engine listing) --\u003e\n\u003ctitle\u003eChemical Sensors Philippines: Gas, Air Quality, pH\/EC \u0026amp; Water Quality | Circuitrocks\u003c\/title\u003e\n\u003cmeta name=\"description\" content=\"Shop chemical sensors in the Philippines: gas (MQ series), air quality, VOC\/CO₂, pH\/EC\/ORP, dissolved oxygen, TDS, ammonia, and more. Arduino, ESP32, and Raspberry Pi compatible. Fast PH shipping from Circuitrocks.\"\u003e\n\n\u003cdiv class=\"product-copy crx-scope\"\u003e\n  \u003cstyle\u003e\n    .crx-scope{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#222;line-height:1.6}\n    .crx-scope h2{font-size:1.6rem;margin:0 0 .25rem}\n    .crx-scope h3{font-size:1.1rem;margin:.75rem 0 .35rem}\n    .crx-scope p{margin:.4rem 0}\n    .crx-scope .lead{font-size:1.05rem}\n    .crx-scope .section{margin:1.1rem 0}\n    .crx-scope .grid{display:grid;gap:.9rem}\n    .crx-scope .cols-2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}\n    .crx-scope .cols-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}\n    .crx-scope .card{background:#fff;border:1px solid #eee;border-radius:12px;padding:1rem}\n    .crx-scope ul{margin:.25rem 0 .6rem 1.15rem}\n    .crx-scope a{color:#15803d;text-decoration:none;border-bottom:1px dashed #9ae6b4}\n    .crx-scope .pill{display:inline-block;background:#e8f5ee;color:#1d7f3f;font-weight:700;padding:.25rem .6rem;border-radius:999px;margin:.25rem 0}\n    .crx-scope .faq-list details{border:1px solid #eee;border-radius:10px;padding:.7rem .9rem;margin:.45rem 0;background:#fff}\n    .crx-scope .faq-list summary{cursor:pointer;font-weight:700}\n    .crx-scope .muted{color:#666}\n    .crx-scope .note{background:#fff8e6;border:1px solid #ffe1a1;border-radius:10px;padding:.7rem}\n  \u003c\/style\u003e\n\n  \u003ch2\u003eChemical Sensors at Circuitrocks — Gas, Air \u0026amp; Water Quality Monitoring\u003c\/h2\u003e\n  \u003cp class=\"lead\"\u003e\n    Build reliable environmental monitors with \u003cstrong\u003echemical sensors\u003c\/strong\u003e for gases (CO, LPG, smoke, alcohol), \u003cstrong\u003eair quality\u003c\/strong\u003e (VOC\/CO₂\/PM), and \u003cstrong\u003ewater chemistry\u003c\/strong\u003e (pH, EC\/TDS, ORP, DO, salinity). Compatible with \u003ca href=\"\/collections\/arduino\"\u003eArduino\u003c\/a\u003e, \u003ca href=\"\/collections\/esp\"\u003eESP32\u003c\/a\u003e, and \u003ca href=\"\/collections\/raspberry-pi\"\u003eRaspberry Pi\u003c\/a\u003e.\n  \u003c\/p\u003e\n  \u003cp class=\"pill\"\u003eGas (MQ series) • VOC\/CO₂\/PM • pH\/EC\/ORP\/DO • TDS \u0026amp; Ammonia • I²C\/UART\/Analog\u003c\/p\u003e\n\n  \u003cdiv class=\"section grid cols-3\"\u003e\n    \u003cdiv class=\"card\"\u003e\n      \u003ch3\u003eWhy choose these sensors\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWide coverage\u003c\/strong\u003e from hobby gas detectors to lab-grade water probes\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eEasy integration\u003c\/strong\u003e via I²C\/UART\/analog with rich libraries\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eScalable\u003c\/strong\u003e for classrooms, farms, aquaculture, and industry pilots\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"card\"\u003e\n      \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003eIndoor air-quality dashboards (CO₂\/VOC\/PM)\u003c\/li\u003e\n        \u003cli\u003eHydroponics \u0026amp; aquarium controllers (pH, EC, DO)\u003c\/li\u003e\n        \u003cli\u003eGas leak\/smoke\/alcohol alerts (MQ series)\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"card\"\u003e\n      \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003ca href=\"\/collections\/displays\"\u003eDisplays\u003c\/a\u003e (OLED\/TFT) \u0026amp; \u003ca href=\"\/collections\/cables\"\u003ecables\u003c\/a\u003e\n\u003c\/li\u003e\n        \u003cli\u003e\n\u003ca href=\"\/collections\/power\"\u003eStable power \u0026amp; isolation\u003c\/a\u003e (avoid noise\/ground loops)\u003c\/li\u003e\n        \u003cli\u003e\n\u003ca href=\"\/collections\/enclosures\"\u003eEnclosures\u003c\/a\u003e \u0026amp; waterproof glands for probes\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card\"\u003e\n    \u003ch3\u003eFeatured categories\u003c\/h3\u003e\n    \u003cdiv class=\"grid cols-3\"\u003e\n      \u003cdiv\u003e\n        \u003ch4\u003eGas \u0026amp; Air Sensors\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003ca href=\"\/search?q=MQ-2|MQ-3|MQ-135\"\u003eMQ series\u003c\/a\u003e (LPG\/CO\/smoke\/alcohol\/VOC)\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=CO2+sensor+NDIR|SCD\"\u003eCO₂ (NDIR) modules\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=PM2.5+sensor|dust+sensor\"\u003eDust\/PM2.5 sensors\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=VOC+TVOC+sensor\"\u003eVOC\/TVOC \u0026amp; air-quality\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch4\u003eWater Quality\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/atlas-scientific\"\u003eAtlas Scientific\u003c\/a\u003e (lab-grade pH\/EC\/ORP\/DO)\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=TDS+sensor+water\"\u003eTDS\/EC \u0026amp; salinity\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=pH+probe+arduino\"\u003epH probes \u0026amp; modules\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=ammonia+NH3+sensor\"\u003eAmmonia (NH₃) \u0026amp; specialty\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003ch4\u003eInterface \u0026amp; Accessories\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/sensors\"\u003eI²C\/UART breakouts\u003c\/a\u003e \u0026amp; carriers\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/collections\/power\"\u003eIsolators, PSUs \u0026amp; regulators\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/collections\/displays\"\u003eData loggers \u0026amp; displays\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp class=\"note\"\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Calibrate regularly. Water probes often require temperature compensation; use an \u003ca href=\"\/search?q=RTD+temperature+sensor\"\u003eRTD\/thermistor\u003c\/a\u003e input when available.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card\"\u003e\n    \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAir-Quality Node:\u003c\/strong\u003e CO₂ (NDIR) + VOC + PM2.5 + \u003ca href=\"\/collections\/displays\"\u003eOLED\u003c\/a\u003e + \u003ca href=\"\/collections\/esp\"\u003eESP32\u003c\/a\u003e\n\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eHydro Monitor:\u003c\/strong\u003e pH + EC + \u003ca href=\"\/search?q=RTD+temperature+sensor\"\u003eRTD\u003c\/a\u003e + \u003ca href=\"\/collections\/power\"\u003eisolated PSU\u003c\/a\u003e + \u003ca href=\"\/collections\/enclosures\"\u003eenclosure\u003c\/a\u003e\n\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eGas Safety:\u003c\/strong\u003e MQ-2\/135 array + buzzer\/relay + \u003ca href=\"\/collections\/power\"\u003e5V PSU\u003c\/a\u003e + \u003ca href=\"\/collections\/cables\"\u003ecables\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card faq-list\"\u003e\n    \u003ch3\u003eFAQ\u003c\/h3\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these compatible with Arduino\/ESP32\/Raspberry Pi?\u003c\/summary\u003e\n      \u003cp\u003eYes. Most modules expose I²C, UART, or analog outputs with available libraries\/examples.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eDo gas sensors need burn-in or calibration?\u003c\/summary\u003e\n      \u003cp\u003eYes—MQ sensors typically need minutes to hours of burn-in and periodic calibration. Follow each product’s datasheet.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I maintain pH\/EC\/DO probes?\u003c\/summary\u003e\n      \u003cp\u003eUse proper storage solutions, rinse (don’t wipe) pH glass, and re-calibrate with fresh standards. Add temperature compensation where supported.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eDo you ship nationwide?\u003c\/summary\u003e\n      \u003cp\u003eYes—fast shipping anywhere in the Philippines. Same-day processing on in-stock orders before cutoff.\u003c\/p\u003e\n    \u003c\/details\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section\"\u003e\n    \u003cp class=\"muted\"\u003eExplore related: \u003ca href=\"\/collections\/sensors\"\u003eAll Sensors\u003c\/a\u003e • \u003ca href=\"\/collections\/atlas-scientific\"\u003eAtlas Scientific\u003c\/a\u003e • \u003ca href=\"\/collections\/arduino\"\u003eArduino\u003c\/a\u003e • \u003ca href=\"\/collections\/esp\"\u003eESP32\/ESP8266\u003c\/a\u003e • \u003ca href=\"\/collections\/raspberry-pi\"\u003eRaspberry Pi\u003c\/a\u003e • \u003ca href=\"\/collections\/power\"\u003ePower \u0026amp; Isolation\u003c\/a\u003e • \u003ca href=\"\/collections\/enclosures\"\u003eEnclosures\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"soil-moisture-sensor-analog-and-digital","title":"Soil Moisture Sensor - Analog\/Digital 2-Probe Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eSoil Moisture Sensor Analog Digital\u003c\/strong\u003e is a soil moisture sensor with analog and digital output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eOperating voltage:\u003c\/strong\u003e 3.3V – 5V; \u003cstrong\u003eWorking voltage:\u003c\/strong\u003e 3.3V-5V; \u003cstrong\u003eOutput mode:\u003c\/strong\u003e Dual output mode (analog output).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eDigital output, easy to adjust:\u003c\/strong\u003e Digital output, easy to adjust\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e DO port output will be high in case the module is unable to reach the set threshold.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e Dual output mode (analog output)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 3.3V – 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 3 x 1.5 cm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Analog Output Interface\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoil Moisture Sensor Analog Digital\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sensors-soil-moisture-sensor-immersion-gold\"\u003eSoil Moisture Sensor Immersion Gold\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-corrosion-resistant\"\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/moisture-sensor-grove\"\u003eMoisture Sensor Grove\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSoil Moisture Sensor Analog Digital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput mode\u003c\/th\u003e\n\u003ctd\u003eDual output mode (analog output)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating voltage\u003c\/th\u003e\n\u003ctd\u003e3.3V – 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWorking voltage\u003c\/th\u003e\n\u003ctd\u003e3.3V-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePanel PCD Dimensions\u003c\/th\u003e\n\u003ctd\u003e3 x 1.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSoil Probe Dimensions\u003c\/th\u003e\n\u003ctd\u003e6 x 3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAO\u003c\/th\u003e\n\u003ctd\u003eAnalog Output Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDO\u003c\/th\u003e\n\u003ctd\u003eDigital Output Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eGND\u003c\/th\u003e\n\u003ctd\u003eGND\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eMany modules in this style expose both \u003cstrong\u003eanalog\u003c\/strong\u003e and \u003cstrong\u003edigital\u003c\/strong\u003e pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Soil Moisture Sensor Analog Digital\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Soil Moisture Sensor Analog Digital measure?\u003c\/strong\u003e\n It is designed to measure moisture level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog and digital sensor?\u003c\/strong\u003e\n This module may provide both analog and digital outputs, depending on how you wire and read it.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45761412038945,"sku":"AB110","price":30.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/soil-moisture-sensor-analog-digital-109.jpg?v=1689317175"},{"product_id":"gas-sensor-mq135","title":"MQ-135 Air Quality Gas Sensor - Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Sensor MQ135\u003c\/strong\u003e is a gas sensor with uart designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eWorking voltage:\u003c\/strong\u003e DC 5V; \u003cstrong\u003eInterface:\u003c\/strong\u003e UART.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e DC 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 150mA\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e TTL output\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 32mm x 22m x 27mm(HIGH 27mm)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e UART\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Sensor MQ135\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with UART\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/analog-smoke-lpg-co-gas-sensor-mq2\"\u003eGas Analog Smoke LPG CO Sensor MQ2\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Sensor MQ135\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWorking voltage\u003c\/th\u003e\n\u003ctd\u003eDC 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWorking Current\u003c\/th\u003e\n\u003ctd\u003e150mA\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDOUT\u003c\/th\u003e\n\u003ctd\u003eTTL output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAOUT\u003c\/th\u003e\n\u003ctd\u003eAnalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003ctd\u003e32mm x 22m x 27mm(HIGH 27mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePreheat time\u003c\/th\u003e\n\u003ctd\u003eOver 20s\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eUART\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then wire \u003cstrong\u003eTX\u003c\/strong\u003e and \u003cstrong\u003eRX\u003c\/strong\u003e to a serial-capable controller at the correct logic level and baud rate. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Sensor MQ135\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Sensor MQ135 measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this UART sensor?\u003c\/strong\u003e\n This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45761426129185,"sku":"2430","price":165.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-sensor-mq135-117.jpg?v=1689317201"},{"product_id":"sensors-soil-moisture-sensor-immersion-gold","title":"DFRobot Soil Moisture Sensor Immersion Gold - SEN0114","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eSoil Moisture Sensor Immersion Gold\u003c\/strong\u003e is a soil moisture sensor designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply:\u003c\/strong\u003e 3.3v or 5v; \u003cstrong\u003eOutput voltage signal:\u003c\/strong\u003e 0~4.2v; \u003cstrong\u003eSize:\u003c\/strong\u003e 60x20x5mm.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog output(Blue wire):\u003c\/strong\u003e Analog output(Blue wire)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog Sensor Cable x1:\u003c\/strong\u003e Analog Sensor Cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 0~4.2v\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 35mA\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 60x20x5mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Immersion Gold\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoil Moisture Sensor Immersion Gold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-analog-and-digital\"\u003eSoil Moisture Sensor Analog Digital\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/moisture-sensor-grove\"\u003eMoisture Sensor Grove\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-corrosion-resistant\"\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSoil Moisture Sensor Immersion Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput voltage signal\u003c\/th\u003e\n\u003ctd\u003e0~4.2v\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply\u003c\/th\u003e\n\u003ctd\u003e3.3v or 5v\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCurrent\u003c\/th\u003e\n\u003ctd\u003e35mA\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e60x20x5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSurface finish\u003c\/th\u003e\n\u003ctd\u003eImmersion Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003echemical sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Soil Moisture Sensor Immersion Gold\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Soil Moisture Sensor Immersion Gold measure?\u003c\/strong\u003e\n It is designed to measure moisture level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45761455128865,"sku":"SEN0114","price":284.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/soil-moisture-sensor-immersion-gold-130.jpg?v=1689317258"},{"product_id":"gas-sensor-mq6","title":"DFRobot MQ-6 Propane\/LPG Gas Sensor - SEN0131","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 40x20mm.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e High sensitivity to LPG, iso-butane, propane\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast response:\u003c\/strong\u003e Fast response\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40x20mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 1-Output 2-GND 3-VCC\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq4\"\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e40x20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePin Definition\u003c\/th\u003e\n\u003ctd\u003e 1-Output 2-GND 3-VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Sensor MQ6 Analog Propane For Arduino\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Sensor MQ6 Analog Propane For Arduino measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45761473151265,"sku":"SEN0131","price":377.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-sensor-mq6-analog-propane-for-arduino-143.jpg?v=1689317303"},{"product_id":"gas-sensor-mq4","title":"MQ-4 Methane (CH4) Gas Sensor - Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 40x20mm.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh sensitivity to CH4, Natural gas:\u003c\/strong\u003e High sensitivity to CH4, Natural gas\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast response:\u003c\/strong\u003e Fast response\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40x20mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq6\"\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e40x20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Analog CH4 Gas Sensor MQ4 For Arduino measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45761474134305,"sku":"AB077","price":99.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-analog-ch4-gas-sensor-mq4-for-arduino-144.jpg?v=1689317307"},{"product_id":"ph-meter-analog-kit-arduino-compatible","title":"DFRobot pH Meter Sensor Analog Kit - SEN0161","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003epH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/strong\u003e is a ph sensor with analog output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eMeasuring Range:\u003c\/strong\u003e 0 - 14PH; \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog; \u003cstrong\u003eAccuracy:\u003c\/strong\u003e ± 0.1pH (25 ℃).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e It brings compact size to ensure easy deployment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog cable x1:\u003c\/strong\u003e Analog cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 0 - 14PH\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e ± 0.1pH (25 ℃)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 43 x 32mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 5.00V\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-meter-pro-analog-sensor\"\u003epH Meter Pro Analog Sensor\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-sensor-meter-analog-spear-tip-kit-for-soil-and-food-applications-gravity\"\u003epH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/surveyor-analog-ph-kit\"\u003eAtlas Scientific Surveyor Analog pH Kit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003epH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasuring Range\u003c\/th\u003e\n\u003ctd\u003e0 - 14PH\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e± 0.1pH (25 ℃)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Size\u003c\/th\u003e\n\u003ctd\u003e43 x 32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Power\u003c\/th\u003e\n\u003ctd\u003e5.00V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eResponse Time\u003c\/th\u003e\n\u003ctd\u003e≤ 1min\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasuring Temperature\u003c\/th\u003e\n\u003ctd\u003e0 - 60 ℃\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × pH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the pH Meter Sensor Analog Kit (Arduino Compatible) measure?\u003c\/strong\u003e\n It is designed to measure pH.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812564132129,"sku":"SEN0161","price":3098.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/ph-meter-sensor-analog-kit-arduino-compatible-271.jpg?v=1689656802"},{"product_id":"gas-sensor-mq5","title":"MQ-5 LPG\/Natural Gas Sensor - Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog and digital.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog and digital\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/analog-smoke-lpg-co-gas-sensor-mq2\"\u003eGas Analog Smoke LPG CO Sensor MQ2\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq135\"\u003eGas Sensor MQ135\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with UART\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq4\"\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog and digital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eMany modules in this style expose both \u003cstrong\u003eanalog\u003c\/strong\u003e and \u003cstrong\u003edigital\u003c\/strong\u003e pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Sensor MQ5 Analog LPG For Arduino\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Sensor MQ5 Analog LPG For Arduino measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog and digital sensor?\u003c\/strong\u003e\n This module may provide both analog and digital outputs, depending on how you wire and read it.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812585759009,"sku":"AB075","price":75.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/gas-sensor-mq5-white.jpg?v=1778911908"},{"product_id":"analog-smoke-lpg-co-gas-sensor-mq2","title":"MQ-2 Gas Sensor - Smoke\/LPG\/CO Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Analog Smoke LPG CO Sensor MQ2\u003c\/strong\u003e is a gas sensor with analog and digital output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eConcentration Range:\u003c\/strong\u003e Approx. 300–10,000 ppm; \u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 5V DC; \u003cstrong\u003eHeater Voltage:\u003c\/strong\u003e 5V.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eProvides both analog and digital output:\u003c\/strong\u003e Provides both analog and digital output\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e Adjustable sensitivity via onboard potentiometer\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDO – Digital Output:\u003c\/strong\u003e DO – Digital Output\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e Analog \u0026amp; Digital\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e Approx. 300–10,000 ppm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V DC\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Analog Smoke LPG CO Sensor MQ2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq135\"\u003eGas Sensor MQ135\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with UART\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Analog Smoke LPG CO Sensor MQ2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog \u0026amp; Digital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eConcentration Range\u003c\/th\u003e\n\u003ctd\u003eApprox. 300–10,000 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eHeater Voltage\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePreheat Time\u003c\/th\u003e\n\u003ctd\u003e20 seconds minimum (recommended longer for stable readings)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDetection Gases\u003c\/th\u003e\n\u003ctd\u003eLPG, Propane, Methane, Hydrogen, Butane, Smoke\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eMany modules in this style expose both \u003cstrong\u003eanalog\u003c\/strong\u003e and \u003cstrong\u003edigital\u003c\/strong\u003e pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Analog Smoke LPG CO Sensor MQ2\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Analog Smoke LPG CO Sensor MQ2 measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog and digital sensor?\u003c\/strong\u003e\n This module may provide both analog and digital outputs, depending on how you wire and read it.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812586348833,"sku":"AB072","price":55.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-analog-smoke-lpg-co-sensor-mq2-368.jpg?v=1689657234"},{"product_id":"analog-alcohol-sensor-mq3","title":"MQ-3 Alcohol Gas Sensor - Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAnalog Alcohol Sensor MQ3\u003c\/strong\u003e is a gas sensor with analog and digital output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog and digital.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog and digital\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Alcohol Sensor MQ3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq135\"\u003eGas Sensor MQ135\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with UART\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq4\"\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAnalog Alcohol Sensor MQ3\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog and digital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eMany modules in this style expose both \u003cstrong\u003eanalog\u003c\/strong\u003e and \u003cstrong\u003edigital\u003c\/strong\u003e pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Analog Alcohol Sensor MQ3\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Analog Alcohol Sensor MQ3 measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog and digital sensor?\u003c\/strong\u003e\n This module may provide both analog and digital outputs, depending on how you wire and read it.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812587200801,"sku":"AB076","price":105.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/analog-alcohol-sensor-mq3-370.jpg?v=1689657243"},{"product_id":"soil-moisture-sensor-corrosion-resistant","title":"DFRobot Capacitive Soil Moisture Sensor - SEN0193","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/strong\u003e is a soil moisture sensor designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3 ~ 5.5 VDC; \u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 0 ~ 3.0VDC; \u003cstrong\u003eInterface:\u003c\/strong\u003e PH2.0-3P.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e PH2.0-3P\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 0 ~ 3.0VDC\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 15g\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 98mm * 23mm (3.86in x 0.905in)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-analog-and-digital\"\u003eSoil Moisture Sensor Analog Digital\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sensors-soil-moisture-sensor-immersion-gold\"\u003eSoil Moisture Sensor Immersion Gold\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/moisture-sensor-grove\"\u003eMoisture Sensor Grove\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003ePH2.0-3P\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Voltage\u003c\/th\u003e\n\u003ctd\u003e0 ~ 3.0VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e3.3 ~ 5.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e15g\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003ctd\u003e98mm * 23mm (3.86in x 0.905in)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eReal-Time Data\u003c\/th\u003e\n\u003ctd\u003eProvides accurate and immediate soil moisture readings.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eEasy Integration\u003c\/th\u003e\n\u003ctd\u003eCompatible with Adafruit’s 3-pin \"Gravity\" interface for quick plug-and-play setup.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCapacitive Sensing\u003c\/th\u003e\n\u003ctd\u003eMeasures soil moisture without direct electrical contact, preventing corrosion and false readings.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Soil Moisture Sensor Corrosion Resistant\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Soil Moisture Sensor Corrosion Resistant measure?\u003c\/strong\u003e\n It is designed to measure moisture level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812596179233,"sku":"SEN0193","price":620.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/soil-moisture-sensor-corrosion-resistant-398.jpg?v=1689657365"},{"product_id":"analog-electrical-conductivity-meter-with-temperature-compensation","title":"DFRobot Gravity Analog Electrical Conductivity Sensor K=1","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable Electrical Conductivity K1 Sensor Kit for Arduino Sensing to Your Next Build\u003c\/h2\u003e\n\n \u003cp\u003e\n Electrical Conductivity K1 Sensor Kit for Arduino Electrical Conductivity K1 Sensor Kit helps you measure the conductivity of water for quality checks, hydroponics, aquaculture, and lab work.\n \u003c\/p\u003e\n\n \u003cp\u003e\n The kit includes the meter board and probe, making it easier to build a full conductivity measurement setup with Arduino-compatible hardware.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMade for water testing:\u003c\/strong\u003e Useful for water quality and nutrient monitoring\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIncludes K=1.0 probe:\u003c\/strong\u003e Good general-purpose EC measurement range\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog output:\u003c\/strong\u003e Easy to connect to controller boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature compensation support:\u003c\/strong\u003e Better stability in changing conditions\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBNC probe connection:\u003c\/strong\u003e Secure and service-friendly interface\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGravity-ready:\u003c\/strong\u003e Easy plug-and-play wiring for fast setup\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the electrical conductivity k1 sensor kit for arduino.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus sensor cables, headers, or a matching expansion shield for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eElectrical Conductivity K1 Sensor Kit for Arduino\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eDFR0300\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eAnalog\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMade for water testing\u003c\/th\u003e\n \u003ctd\u003eUseful for water quality and nutrient monitoring\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eIncludes K=1.0 probe\u003c\/th\u003e\n \u003ctd\u003eGood general-purpose EC measurement range\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eAnalog output\u003c\/th\u003e\n \u003ctd\u003eEasy to connect to controller boards\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTemperature compensation support\u003c\/th\u003e\n \u003ctd\u003eBetter stability in changing conditions\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBNC probe connection\u003c\/th\u003e\n \u003ctd\u003eSecure and service-friendly interface\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eNote\u003c\/th\u003e\n \u003ctd\u003eUse the official DFRobot resources below for wiring, code examples, and setup details.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/product-1123.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"https:\/\/wiki.dfrobot.com\/dfr0300\/\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Electrical Conductivity K1 Sensor Kit for Arduino\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this for logging or monitoring projects?\u003c\/strong\u003e Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812599456033,"sku":"DFR0300","price":8808.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/electrical-conductivity-k1-sensor-kit-for-arduino-413.jpg?v=1689657440"},{"product_id":"analog-orp-meter-v1-0","title":"DFRobot ORP Analog Meter V1.0 - SEN0165","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eORP Analog Meter V1.0\u003c\/strong\u003e is an orp sensor with analog output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eMeasuring Range:\u003c\/strong\u003e -2000mV—2000mV; \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog; \u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±10mv (25 ℃).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog cable x1:\u003c\/strong\u003e Analog cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e -2000mV—2000mV\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e ±10mv (25 ℃)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40mmX27mm(1.57\"x1.06\")\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e +5.00V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eORP Analog Meter V1.0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eORP sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/surveyor-analog-kit-atlas-scientific\"\u003eAtlas Scientific Surveyor Analog ORP Kit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eORP sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/atlas-scientific-surveyor-analog-orp-sensor-meter\"\u003eAtlas Scientific Surveyor™ Analog ORP Sensor \/ Meter\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eORP sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-sensor-meter-analog-kit-v2-gravity-for-arduino\"\u003epH Sensor Meter Analog Kit V2 Gravity for Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eORP Analog Meter V1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasuring Range\u003c\/th\u003e\n\u003ctd\u003e-2000mV—2000mV\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±10mv (25 ℃)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Size\u003c\/th\u003e\n\u003ctd\u003e40mmX27mm(1.57\"x1.06\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Power\u003c\/th\u003e\n\u003ctd\u003e+5.00V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eResponse Time\u003c\/th\u003e\n\u003ctd\u003e≤20sec\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSuitable Temperature\u003c\/th\u003e\n\u003ctd\u003e5-70℃\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × ORP Analog Meter V1.0\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the ORP Analog Meter V1.0 measure?\u003c\/strong\u003e\n It is designed to measure oxidation-reduction potential.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812599587105,"sku":"SEN0165","price":9345.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/orp-analog-meter-v1-0-414.jpg?v=1689657445"},{"product_id":"ph-meter-pro-analog-sensor","title":"DFRobot pH Meter Pro Analog Sensor - SEN0169","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003epH Meter Pro Analog Sensor\u003c\/strong\u003e is a ph sensor with analog output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eMeasuring Range:\u003c\/strong\u003e 0-14PH; \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog; \u003cstrong\u003eAccuracy:\u003c\/strong\u003e ± 0.1pH (25 ℃).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog cable x1:\u003c\/strong\u003e Analog cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 0-14PH\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e ± 0.1pH (25 ℃)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 43mmx32mm（1.70\"x1.26\")\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 5.00V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Meter Pro Analog Sensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-meter-analog-kit-arduino-compatible\"\u003epH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-sensor-meter-analog-spear-tip-kit-for-soil-and-food-applications-gravity\"\u003epH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/surveyor-analog-ph-kit\"\u003eAtlas Scientific Surveyor Analog pH Kit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003epH Meter Pro Analog Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasuring Range\u003c\/th\u003e\n\u003ctd\u003e0-14PH\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e± 0.1pH (25 ℃)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Size\u003c\/th\u003e\n\u003ctd\u003e43mmx32mm（1.70\"x1.26\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Power\u003c\/th\u003e\n\u003ctd\u003e5.00V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eResponse Time\u003c\/th\u003e\n\u003ctd\u003e≤ 1min\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasuring Temperature\u003c\/th\u003e\n\u003ctd\u003e0-60 ℃\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × pH Meter Pro Analog Sensor\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the pH Meter Pro Analog Sensor measure?\u003c\/strong\u003e\n It is designed to measure pH.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812628029729,"sku":"SEN0169","price":5975.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/ph-meter-pro-analog-sensor-524.jpg?v=1689657894"},{"product_id":"gas-co2-analog-sensor-gravity","title":"DFRobot Gravity MG811 Analog CO2 Gas Sensor","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable Gas Carbon Dioxide CO2 Analog Sensor Gravity Sensing to Your Next Build\u003c\/h2\u003e\n\n \u003cp\u003e\n Gas CO2 Analog Sensor Gravity. \"Greenhouse Effect\" is melting the Earth ice core every minute and creating dangerous icebergs. By knowing the exact concentration of CO2, we can do something to reduce the CO2 and to protect our Earth. For that reason, this CO2 sensor is designed by DFRobot engineer. This is the first CO2 sensor in Arduino market. The output voltage of the module falls as the concentration of the CO2 increases. The potentiometer onboard is designed to set the threshold of voltage. As long as the CO2 concentration is high enough (voltage is lower than threshold), a digital signal (ON\/OFF) will be released.\n \u003c\/p\u003e\n\n \u003cp\u003e\n It has MG-811 sensor module onboard which is highly sensitive to CO2 and less sensitive to alcohol and CO, low humidity \u0026amp; temperature dependency.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eAir Quality Control\u003c\/li\u003e\n \u003cli\u003eFerment Process Control\u003c\/li\u003e\n \u003cli\u003eRoom Temperature CO2 concentration Detection\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating voltage:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e Gravity Analog\u003c\/li\u003e\n \u003cli\u003eOne digital output\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the gas carbon dioxide co2 analog sensor gravity.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus sensor cables, headers, or a matching expansion shield for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eGas Carbon Dioxide CO2 Analog Sensor Gravity\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eSEN0159\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eAnalog, Digital\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating voltage\u003c\/th\u003e\n \u003ctd\u003e5V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDimensions\u003c\/th\u003e\n \u003ctd\u003e32x42mm (1.26x1.65\")\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/search-SEN0159.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"http:\/\/www.dfrobot.com\/wiki\/index.php\/CO2_Sensor_SKU:SEN0159\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/SEN0159\/CO2%20Sensor%20V1%20SCH.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSchematic\u003c\/a\u003e · \u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/SEN0159\/CO2%20Sensor%20V1%20Layout.pdf\" target=\"_blank\" rel=\"noopener\"\u003eLayout\u003c\/a\u003e · \u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/SEN0159\/CO2b%20MG811%20datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMG811 datasheet\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Gas Carbon Dioxide CO2 Analog Sensor Gravity\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this for logging or monitoring projects?\u003c\/strong\u003e Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812651950369,"sku":"SEN0159","price":3265.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-carbon-dioxide-co2-analog-sensor-gravity-a36355.jpg?v=1689658284"},{"product_id":"gas-co-combustible-analog-sensor-mq9-for-arduino-gravity","title":"DFRobot Gravity MQ9 CO\/Combustible Gas Sensor - SEN0134","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 36.4x26.6mm(1.43\"x1.05\").\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e High sensitivity to Methane, Propane and CO\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGravity Analog Cable x1:\u003c\/strong\u003e Gravity Analog Cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Semiconductor\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 36.4x26.6mm(1.43\"x1.05\")\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSensor Type\u003c\/th\u003e\n\u003ctd\u003eSemiconductor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e36.4x26.6mm(1.43\"x1.05\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas CO Combustible Analog Sensor MQ9 For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812681212193,"sku":"SEN0134","price":439.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity-730.jpg?v=1689658781"},{"product_id":"hydrogen-gas-analog-sensor-mq8-for-arduino-gravity","title":"DFRobot MQ-8 Hydrogen Gas Sensor Gravity - SEN0133","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\").\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh sensitivity to Hydrogen (H2):\u003c\/strong\u003e High sensitivity to Hydrogen (H2)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\")\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 1-Output 2-GND 3-VCC\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq6\"\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e40x20mm(1.57\"x0.79\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePin Definition\u003c\/th\u003e\n\u003ctd\u003e 1-Output 2-GND 3-VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Hydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Hydrogen Gas Analog Sensor MQ8 For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812682031393,"sku":"SEN0133","price":547.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity-731.jpg?v=1689658786"},{"product_id":"carbon-monoxide-analog-sensor-mq7-for-arduino-gravity","title":"MQ-7 Carbon Monoxide Gas Sensor - Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\").\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh sensitivity to carbon monoxide:\u003c\/strong\u003e High sensitivity to carbon monoxide\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast response:\u003c\/strong\u003e Fast response\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\")\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq4\"\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e40x20mm(1.57\"x0.79\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Carbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Carbon Monoxide Analog Sensor MQ7 For Arduino measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812682129697,"sku":"AB074","price":105.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/carbon-monoxide-analog-sensor-mq7-for-arduino-732.jpg?v=1689658790"},{"product_id":"gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity","title":"DFRobot Gravity MQ2 Gas Sensor - SEN0127","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 36.4x26.6mm (1.4x1'').\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e Easily recognitive interfaces of sensors (\"A\" for analog and \"D\" for digital)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh quality connector:\u003c\/strong\u003e High quality connector\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide detecting scope:\u003c\/strong\u003e Wide detecting scope\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 36.4x26.6mm (1.4x1'')\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq6\"\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e36.4x26.6mm (1.4x1'')\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog and digital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eMany modules in this style expose both \u003cstrong\u003eanalog\u003c\/strong\u003e and \u003cstrong\u003edigital\u003c\/strong\u003e pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog and digital sensor?\u003c\/strong\u003e\n This module may provide both analog and digital outputs, depending on how you wire and read it.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812682228001,"sku":"SEN0127","price":799.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity-733.jpg?v=1689658795"},{"product_id":"adafruit-mics5524-co-alcohol-and-voc-gas-sensor-breakout","title":"Adafruit MiCS-5524 CO\/Alcohol\/VOC Gas Sensor Breakout","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/strong\u003e is a gas sensor designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 20.0mm x 12.7mm x 3.1mm \/ 0.8\" x 0.5\" x 0.1\"; \u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 0.9g \/ 0.0oz; \u003cstrong\u003eCategory:\u003c\/strong\u003e gas sensors.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic\"\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq135\"\u003eGas Sensor MQ135\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with UART\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Dimensions\u003c\/th\u003e\n\u003ctd\u003e20.0mm x 12.7mm x 3.1mm \/ 0.8\" x 0.5\" x 0.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e0.9g \/ 0.0oz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812688093473,"sku":"3199","price":1256.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/adafruit-mics5524-co-alcohol-and-voc-gas-sensor-breakout-746.jpg?v=1689658861"},{"product_id":"moisture-sensor-grove","title":"Seeed Grove Moisture Sensor - 101020008","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eMoisture Sensor Grove\u003c\/strong\u003e is a chemical sensor module designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eOperating voltage:\u003c\/strong\u003e 3.3~5V; \u003cstrong\u003eŸSensor Output Value in dry soil:\u003c\/strong\u003e 0~ 300; \u003cstrong\u003eŸPCB size:\u003c\/strong\u003e 2.0cm X 6.0cm.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eGrove compatible interface:\u003c\/strong\u003e Grove compatible interface\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e 0~ 300\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 3.3~5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 35mA\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 2.0cm X 6.0cm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMoisture Sensor Grove\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-analog-and-digital\"\u003eSoil Moisture Sensor Analog Digital\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sensors-soil-moisture-sensor-immersion-gold\"\u003eSoil Moisture Sensor Immersion Gold\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-corrosion-resistant\"\u003eSoil Moisture Sensor Corrosion Resistant\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eMoisture Sensor Grove\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eŸSensor Output Value in dry soil\u003c\/th\u003e\n\u003ctd\u003e0~ 300\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eŸSensor Output Value in humid soil\u003c\/th\u003e\n\u003ctd\u003e300~700\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSensor Output Value in water\u003c\/th\u003e\n\u003ctd\u003e700 ~ 950\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating voltage\u003c\/th\u003e\n\u003ctd\u003e3.3~5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating current\u003c\/th\u003e\n\u003ctd\u003e35mA\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eŸPCB size\u003c\/th\u003e\n\u003ctd\u003e2.0cm X 6.0cm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003echemical sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eMoisture Sensor Grove\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Moisture Sensor Grove\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Moisture Sensor Grove measure?\u003c\/strong\u003e\n It is designed to measure moisture level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Seeed Studio","offers":[{"title":"Default Title","offer_id":45812706279713,"sku":"101020008","price":277.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/moisture-sensor-grove-white.jpg?v=1778912060"},{"product_id":"dissolved-oxygen-kit","title":"Atlas Scientific Dissolved Oxygen Kit - Complete DO Sensor Kit","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eBuild a High-Accuracy Dissolved Oxygen Monitor Faster\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific Dissolved Oxygen Kit\u003c\/strong\u003e gives you a complete starting point for dissolved oxygen sensing with Atlas hardware. It combines the EZO™ Dissolved Oxygen Circuit, a lab grade dissolved oxygen probe, calibration solution, and an electrically isolated carrier board in one package.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This kit is a strong fit for engineers, lab builders, and water quality projects that need stable dissolved oxygen readings without piecing together each part one by one.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e This kit is meant for dissolved oxygen measurement with Atlas EZO hardware. It includes the core sensing and calibration parts, but you still need your own host device such as a PC, Raspberry Pi, or microcontroller.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Includes the circuit, probe, calibration pouches, electrolyte, syringe, and isolated carrier board\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInterference-free setup:\u003c\/strong\u003e Electrical isolation helps reduce noise, ground loops, and signal issues\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast prototyping:\u003c\/strong\u003e Easier to start than sourcing each dissolved oxygen part separately\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLab grade probe:\u003c\/strong\u003e Designed for reliable dissolved oxygen measurement work\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePC and embedded friendly:\u003c\/strong\u003e Useful with Raspberry Pi, USB workflows, and custom controller builds\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it for water quality monitors, aquarium systems, aquaculture testing, environmental logging, lab instruments, and custom dissolved oxygen measurement stations.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with a \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible controller\u003c\/a\u003e, or a PC for setup and testing. A clean enclosure and cable management parts are also helpful for bench or field builds.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include replacement electrolyte, extra calibration solution, probe storage and maintenance items, isolators, and mounting hardware for wet or portable setups.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific Dissolved Oxygen Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMain Electronics\u003c\/th\u003e\n \u003ctd\u003eEZO Dissolved Oxygen Circuit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Included\u003c\/th\u003e\n \u003ctd\u003eLab Grade Dissolved Oxygen Probe\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCalibration Included\u003c\/th\u003e\n \u003ctd\u003e3 x 20ml zero dissolved oxygen calibration solution pouches\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOther Included Parts\u003c\/th\u003e\n \u003ctd\u003e30ml electrolyte solution, syringe, electrically isolated EZO carrier board\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCarrier Board Size\u003c\/th\u003e\n \u003ctd\u003e56.2mm x 32mm (2.2in x 1.2in)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eApprox. Weight\u003c\/th\u003e\n \u003ctd\u003e25g\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n The isolated carrier board helps protect readings from interference while you connect the dissolved oxygen circuit to your host system. This makes the kit useful for early testing, calibration, and long-run prototype work.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Before first use, make sure the probe is prepared and the included calibration materials are used as part of your setup process for dependable readings.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × EZO™ Dissolved Oxygen Circuit\u003c\/p\u003e\n \u003cp\u003e1 × Lab Grade Dissolved Oxygen Probe\u003c\/p\u003e\n \u003cp\u003e1 × Electrically Isolated EZO™ Carrier Board\u003c\/p\u003e\n \u003cp\u003e3 × 20ml Zero Dissolved Oxygen calibration solution pouches\u003c\/p\u003e\n \u003cp\u003e1 × 30ml bottle of electrolyte solution\u003c\/p\u003e\n \u003cp\u003e1 × Syringe\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes this include the probe and circuit?\u003c\/strong\u003e\n Yes. The kit includes both the EZO dissolved oxygen circuit and a lab grade dissolved oxygen probe.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it include calibration materials?\u003c\/strong\u003e\n Yes. Zero dissolved oxygen calibration pouches and electrolyte are included.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Raspberry Pi?\u003c\/strong\u003e\n Yes. Atlas states it can be connected through the carrier board to a computer or Raspberry Pi setup.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this good for prototyping?\u003c\/strong\u003e\n Yes. It is made to help you start quickly with a full dissolved oxygen sensing setup.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45812708868385,"sku":"kit-103","price":17499.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ChatGPT_Image_Aug_14_2025_10_59_41_AM.png?v=1755140417"},{"product_id":"conductivity-k-1-0-kit","title":"Atlas Scientific Conductivity K 1.0 Kit - Complete EC Sensor Kit","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Conductivity Across a Wide Water Quality Range\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific Conductivity K 1.0 Kit\u003c\/strong\u003e bundles the key parts needed to start conductivity sensing with Atlas hardware. It includes the EZO™ Conductivity Circuit, a conductivity probe, an electrically isolated carrier board, and calibration pouches in one kit.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Atlas positions this kit for water testing jobs that span low to high conductivity, including environmental monitoring, hydroponics, and both fresh and saltwater systems.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e This is a complete sensing kit for conductivity projects, but you still need your own host device and enclosure if you are building a finished product.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete EC starter kit:\u003c\/strong\u003e Circuit, probe, carrier board, and calibration solutions are included\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide useful range:\u003c\/strong\u003e Built for water conductivity work from low to high readings\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIsolation included:\u003c\/strong\u003e Helps keep measurements cleaner during setup and testing\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGood for many water systems:\u003c\/strong\u003e Useful for hydroponics, freshwater, saltwater, and environmental projects\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFaster development:\u003c\/strong\u003e Easier than choosing each conductivity part separately\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it for hydroponics controllers, aquarium monitoring, field water logging, lab water quality tools, and custom conductivity measurement systems.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with a \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, \u003ca href=\"\/search?q=arduino\"\u003emicrocontroller board\u003c\/a\u003e, or PC. A waterproof probe holder, enclosure, and extra calibration pouches can make long-term setups easier.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Popular add-ons include probe cleaner, spare calibration solutions, extra isolation hardware, and mounting parts for pipe or tank installs.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific Conductivity K 1.0 Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMain Electronics\u003c\/th\u003e\n \u003ctd\u003eEZO Conductivity Circuit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Included\u003c\/th\u003e\n \u003ctd\u003eConductivity Probe K 1.0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Range\u003c\/th\u003e\n \u003ctd\u003e5 uS\/cm to 200,000 uS\/cm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eKit Application Range\u003c\/th\u003e\n \u003ctd\u003eAbout 10 uS to 100,000 uS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCalibration Included\u003c\/th\u003e\n \u003ctd\u003e4 x 20ml pouches: 2 x 12,880uS and 2 x 80,000uS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCarrier Board\u003c\/th\u003e\n \u003ctd\u003eElectrically Isolated EZO Carrier Board\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCarrier Board Size\u003c\/th\u003e\n \u003ctd\u003e56.2mm x 32mm (2.2in x 1.2in)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eApprox. Weight\u003c\/th\u003e\n \u003ctd\u003e25g\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n The probe and circuit work together for digital conductivity sensing, while the isolated carrier board helps reduce electrical problems during setup and testing.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Use the included calibration pouches before deployment so your system is ready for dependable conductivity readings across your target range.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × EZO™ Conductivity Circuit\u003c\/p\u003e\n \u003cp\u003e1 × Conductivity Probe K 1.0\u003c\/p\u003e\n \u003cp\u003e1 × Electrically Isolated EZO™ Carrier Board\u003c\/p\u003e\n \u003cp\u003e4 × 20ml conductivity calibration solution pouches\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat kinds of projects is this kit good for?\u003c\/strong\u003e\n Atlas recommends it for environmental monitoring, hydroponics, and fresh or saltwater aquarium work.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it include calibration solution?\u003c\/strong\u003e\n Yes. Four conductivity calibration pouches are included.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs the carrier board included?\u003c\/strong\u003e\n Yes. The kit includes an electrically isolated EZO carrier board.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it for custom water monitoring systems?\u003c\/strong\u003e\n Yes. It is a common starting point for embedded and PC-based conductivity projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45812709163297,"sku":"EC-KIT-1-0","price":24224.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/202408150552563f8a632fa395404f2868d29b71ab1f9e.jpg?v=1723701924"},{"product_id":"ph-4-00-calibration","title":"pH 4.00 Calibration Solution Liquid - Probe Calibration","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003epH 4.00 Calibration Solution — Atlas Scientific\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific pH 4.00 Calibration Solution\u003c\/strong\u003e is a precision reference liquid used to calibrate\n \u003ca href=\"\/search?q=ph+sensor\"\u003epH sensors\u003c\/a\u003e and \u003ca href=\"\/search?q=ezo+ph\"\u003eEZO™ pH circuits\u003c\/a\u003e. Accurate calibration is\n the foundation of reliable pH measurement — without it, your sensor readings will drift and become untrustworthy over time.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This solution is manufactured to strict NIST-traceable standards, ensuring the pH value is accurate and consistent\n from bottle to bottle. It's essential for anyone doing serious water quality monitoring, hydroponics, aquaculture,\n aquarium management, or environmental sensing.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eCalibration tip:\u003c\/strong\u003e For best accuracy, perform a \u003cstrong\u003e3-point calibration\u003c\/strong\u003e using all three solutions:\n \u003ca href=\"\/search?q=ph+4+calibration\"\u003epH 4.00\u003c\/a\u003e (acid),\n \u003ca href=\"\/search?q=ph+7+calibration\"\u003epH 7.00\u003c\/a\u003e (neutral), and\n \u003ca href=\"\/search?q=ph+10+calibration\"\u003epH 10.00\u003c\/a\u003e (base).\n A 2-point calibration (pH 4 + pH 7, or pH 7 + pH 10) is acceptable for narrower measurement ranges.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy calibration matters\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor drift:\u003c\/strong\u003e pH probes naturally drift over days and weeks — regular calibration corrects this\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature effects:\u003c\/strong\u003e pH readings shift with temperature; calibration at your working temperature improves accuracy\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProbe aging:\u003c\/strong\u003e As probes age, their response curve changes — calibration compensates\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrusted data:\u003c\/strong\u003e Uncalibrated sensors can be off by 0.5–2.0 pH units, which is significant in most applications\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003epH calibration point guide\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eSolution\u003c\/th\u003e\n\u003cth\u003epH Value\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eWhen to use\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+4+calibration\"\u003epH 4.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003eAcidic\u003c\/td\u003e\n\u003ctd\u003eCalibrating for acidic measurements (pools, fermentation, soil)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+7+calibration\"\u003epH 7.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e7.00\u003c\/td\u003e\n\u003ctd\u003eNeutral\u003c\/td\u003e\n\u003ctd\u003eAlways use — the baseline midpoint for all calibrations\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+10+calibration\"\u003epH 10.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10.00\u003c\/td\u003e\n\u003ctd\u003eBasic\/Alkaline\u003c\/td\u003e\n\u003ctd\u003eCalibrating for alkaline measurements (aquariums, wastewater)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eCompatible Atlas Scientific products\u003c\/h3\u003e\n \u003cp\u003e\n Designed for use with \u003ca href=\"\/search?q=atlas+scientific+ph\"\u003eAtlas Scientific pH probes\u003c\/a\u003e and the\n \u003ca href=\"\/search?q=ezo+ph\"\u003eEZO™ pH Circuit\u003c\/a\u003e. Also works with any standard pH sensor or meter that requires\n buffer solution calibration.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat you can monitor\u003c\/h3\u003e\n \u003cp\u003e\n Hydroponics nutrient solutions, aquarium and reef tank water, swimming pool chemistry, drinking water quality,\n wastewater treatment, soil pH, fermentation processes, and laboratory experiments.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAtlas Scientific pH 4.00 Calibration Solution\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003epH Value\u003c\/th\u003e\n\u003ctd\u003e4.00 (±0.01 at 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eAcidic buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTraceability\u003c\/th\u003e\n\u003ctd\u003eNIST-traceable\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eLiquid solution (bottle)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eShelf life\u003c\/th\u003e\n\u003ctd\u003eUse within expiry date printed on bottle; store sealed at room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eStorage \u0026amp; handling\u003c\/h3\u003e\n \u003cp\u003e\n Keep bottles sealed and stored at room temperature away from direct sunlight. Do not pour used solution back\n into the bottle — always use a clean sample to avoid contamination. Discard solution after use.\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow often should I calibrate my pH sensor?\u003c\/strong\u003e\n For critical applications, calibrate weekly. For general monitoring, monthly calibration is usually sufficient.\n Always recalibrate after replacing a probe or if readings seem inconsistent.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDo I need all three solutions?\u003c\/strong\u003e\n A 2-point calibration (pH 7 + one other) is fine for most uses. 3-point calibration provides the best accuracy\n across the full pH range. Always include pH 7.00 as your midpoint.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this with non-Atlas Scientific sensors?\u003c\/strong\u003e\n Yes. Standard pH buffer solutions work with any pH probe or meter that requires calibration.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes temperature affect calibration?\u003c\/strong\u003e\n Yes. Calibrate at the same temperature you'll be measuring at for best accuracy. Most EZO circuits include\n automatic temperature compensation when paired with a \u003ca href=\"\/search?q=atlas+scientific+temperature\"\u003etemperature sensor\u003c\/a\u003e.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812710342945,"sku":"CHEM-pH-4","price":780.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ph-4-00-calibration-hires.jpg?v=1778921163"},{"product_id":"ph-7-00-calibration","title":"pH 7.00 Calibration Solution Liquid - Neutral Buffer","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003epH 7.00 Calibration Solution — Atlas Scientific\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific pH 7.00 Calibration Solution\u003c\/strong\u003e is a precision reference liquid used to calibrate\n \u003ca href=\"\/search?q=ph+sensor\"\u003epH sensors\u003c\/a\u003e and \u003ca href=\"\/search?q=ezo+ph\"\u003eEZO™ pH circuits\u003c\/a\u003e. Accurate calibration is\n the foundation of reliable pH measurement — without it, your sensor readings will drift and become untrustworthy over time.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This solution is manufactured to strict NIST-traceable standards, ensuring the pH value is accurate and consistent\n from bottle to bottle. It's essential for anyone doing serious water quality monitoring, hydroponics, aquaculture,\n aquarium management, or environmental sensing.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eCalibration tip:\u003c\/strong\u003e For best accuracy, perform a \u003cstrong\u003e3-point calibration\u003c\/strong\u003e using all three solutions:\n \u003ca href=\"\/search?q=ph+4+calibration\"\u003epH 4.00\u003c\/a\u003e (acid),\n \u003ca href=\"\/search?q=ph+7+calibration\"\u003epH 7.00\u003c\/a\u003e (neutral), and\n \u003ca href=\"\/search?q=ph+10+calibration\"\u003epH 10.00\u003c\/a\u003e (base).\n A 2-point calibration (pH 4 + pH 7, or pH 7 + pH 10) is acceptable for narrower measurement ranges.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy calibration matters\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor drift:\u003c\/strong\u003e pH probes naturally drift over days and weeks — regular calibration corrects this\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature effects:\u003c\/strong\u003e pH readings shift with temperature; calibration at your working temperature improves accuracy\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProbe aging:\u003c\/strong\u003e As probes age, their response curve changes — calibration compensates\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrusted data:\u003c\/strong\u003e Uncalibrated sensors can be off by 0.5–2.0 pH units, which is significant in most applications\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003epH calibration point guide\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eSolution\u003c\/th\u003e\n\u003cth\u003epH Value\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eWhen to use\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+4+calibration\"\u003epH 4.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003eAcidic\u003c\/td\u003e\n\u003ctd\u003eCalibrating for acidic measurements (pools, fermentation, soil)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+7+calibration\"\u003epH 7.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e7.00\u003c\/td\u003e\n\u003ctd\u003eNeutral\u003c\/td\u003e\n\u003ctd\u003eAlways use — the baseline midpoint for all calibrations\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+10+calibration\"\u003epH 10.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10.00\u003c\/td\u003e\n\u003ctd\u003eBasic\/Alkaline\u003c\/td\u003e\n\u003ctd\u003eCalibrating for alkaline measurements (aquariums, wastewater)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eCompatible Atlas Scientific products\u003c\/h3\u003e\n \u003cp\u003e\n Designed for use with \u003ca href=\"\/search?q=atlas+scientific+ph\"\u003eAtlas Scientific pH probes\u003c\/a\u003e and the\n \u003ca href=\"\/search?q=ezo+ph\"\u003eEZO™ pH Circuit\u003c\/a\u003e. Also works with any standard pH sensor or meter that requires\n buffer solution calibration.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat you can monitor\u003c\/h3\u003e\n \u003cp\u003e\n Hydroponics nutrient solutions, aquarium and reef tank water, swimming pool chemistry, drinking water quality,\n wastewater treatment, soil pH, fermentation processes, and laboratory experiments.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAtlas Scientific pH 7.00 Calibration Solution\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003epH Value\u003c\/th\u003e\n\u003ctd\u003e7.00 (±0.01 at 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eNeutral buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTraceability\u003c\/th\u003e\n\u003ctd\u003eNIST-traceable\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eLiquid solution (bottle)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eShelf life\u003c\/th\u003e\n\u003ctd\u003eUse within expiry date printed on bottle; store sealed at room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eStorage \u0026amp; handling\u003c\/h3\u003e\n \u003cp\u003e\n Keep bottles sealed and stored at room temperature away from direct sunlight. Do not pour used solution back\n into the bottle — always use a clean sample to avoid contamination. Discard solution after use.\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow often should I calibrate my pH sensor?\u003c\/strong\u003e\n For critical applications, calibrate weekly. For general monitoring, monthly calibration is usually sufficient.\n Always recalibrate after replacing a probe or if readings seem inconsistent.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDo I need all three solutions?\u003c\/strong\u003e\n A 2-point calibration (pH 7 + one other) is fine for most uses. 3-point calibration provides the best accuracy\n across the full pH range. Always include pH 7.00 as your midpoint.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this with non-Atlas Scientific sensors?\u003c\/strong\u003e\n Yes. Standard pH buffer solutions work with any pH probe or meter that requires calibration.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes temperature affect calibration?\u003c\/strong\u003e\n Yes. Calibrate at the same temperature you'll be measuring at for best accuracy. Most EZO circuits include\n automatic temperature compensation when paired with a \u003ca href=\"\/search?q=atlas+scientific+temperature\"\u003etemperature sensor\u003c\/a\u003e.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812710736161,"sku":"CHEM-pH-7","price":780.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ph-7-00-calibration-hires.jpg?v=1778921165"},{"product_id":"ph-10-00-calibration","title":"pH 10.00 Calibration Solution Liquid - Basic Buffer","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003epH 10.00 Calibration Solution — Atlas Scientific\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific pH 10.00 Calibration Solution\u003c\/strong\u003e is a precision reference liquid used to calibrate\n \u003ca href=\"\/search?q=ph+sensor\"\u003epH sensors\u003c\/a\u003e and \u003ca href=\"\/search?q=ezo+ph\"\u003eEZO™ pH circuits\u003c\/a\u003e. Accurate calibration is\n the foundation of reliable pH measurement — without it, your sensor readings will drift and become untrustworthy over time.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This solution is manufactured to strict NIST-traceable standards, ensuring the pH value is accurate and consistent\n from bottle to bottle. It's essential for anyone doing serious water quality monitoring, hydroponics, aquaculture,\n aquarium management, or environmental sensing.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eCalibration tip:\u003c\/strong\u003e For best accuracy, perform a \u003cstrong\u003e3-point calibration\u003c\/strong\u003e using all three solutions:\n \u003ca href=\"\/search?q=ph+4+calibration\"\u003epH 4.00\u003c\/a\u003e (acid),\n \u003ca href=\"\/search?q=ph+7+calibration\"\u003epH 7.00\u003c\/a\u003e (neutral), and\n \u003ca href=\"\/search?q=ph+10+calibration\"\u003epH 10.00\u003c\/a\u003e (base).\n A 2-point calibration (pH 4 + pH 7, or pH 7 + pH 10) is acceptable for narrower measurement ranges.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy calibration matters\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor drift:\u003c\/strong\u003e pH probes naturally drift over days and weeks — regular calibration corrects this\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature effects:\u003c\/strong\u003e pH readings shift with temperature; calibration at your working temperature improves accuracy\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProbe aging:\u003c\/strong\u003e As probes age, their response curve changes — calibration compensates\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrusted data:\u003c\/strong\u003e Uncalibrated sensors can be off by 0.5–2.0 pH units, which is significant in most applications\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003epH calibration point guide\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eSolution\u003c\/th\u003e\n\u003cth\u003epH Value\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eWhen to use\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+4+calibration\"\u003epH 4.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4.00\u003c\/td\u003e\n\u003ctd\u003eAcidic\u003c\/td\u003e\n\u003ctd\u003eCalibrating for acidic measurements (pools, fermentation, soil)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+7+calibration\"\u003epH 7.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e7.00\u003c\/td\u003e\n\u003ctd\u003eNeutral\u003c\/td\u003e\n\u003ctd\u003eAlways use — the baseline midpoint for all calibrations\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ph+10+calibration\"\u003epH 10.00\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e10.00\u003c\/td\u003e\n\u003ctd\u003eBasic\/Alkaline\u003c\/td\u003e\n\u003ctd\u003eCalibrating for alkaline measurements (aquariums, wastewater)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eCompatible Atlas Scientific products\u003c\/h3\u003e\n \u003cp\u003e\n Designed for use with \u003ca href=\"\/search?q=atlas+scientific+ph\"\u003eAtlas Scientific pH probes\u003c\/a\u003e and the\n \u003ca href=\"\/search?q=ezo+ph\"\u003eEZO™ pH Circuit\u003c\/a\u003e. Also works with any standard pH sensor or meter that requires\n buffer solution calibration.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat you can monitor\u003c\/h3\u003e\n \u003cp\u003e\n Hydroponics nutrient solutions, aquarium and reef tank water, swimming pool chemistry, drinking water quality,\n wastewater treatment, soil pH, fermentation processes, and laboratory experiments.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAtlas Scientific pH 10.00 Calibration Solution\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003epH Value\u003c\/th\u003e\n\u003ctd\u003e10.00 (±0.01 at 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eBasic\/Alkaline buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTraceability\u003c\/th\u003e\n\u003ctd\u003eNIST-traceable\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eLiquid solution (bottle)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eShelf life\u003c\/th\u003e\n\u003ctd\u003eUse within expiry date printed on bottle; store sealed at room temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eStorage \u0026amp; handling\u003c\/h3\u003e\n \u003cp\u003e\n Keep bottles sealed and stored at room temperature away from direct sunlight. Do not pour used solution back\n into the bottle — always use a clean sample to avoid contamination. Discard solution after use.\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow often should I calibrate my pH sensor?\u003c\/strong\u003e\n For critical applications, calibrate weekly. For general monitoring, monthly calibration is usually sufficient.\n Always recalibrate after replacing a probe or if readings seem inconsistent.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDo I need all three solutions?\u003c\/strong\u003e\n A 2-point calibration (pH 7 + one other) is fine for most uses. 3-point calibration provides the best accuracy\n across the full pH range. Always include pH 7.00 as your midpoint.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this with non-Atlas Scientific sensors?\u003c\/strong\u003e\n Yes. Standard pH buffer solutions work with any pH probe or meter that requires calibration.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes temperature affect calibration?\u003c\/strong\u003e\n Yes. Calibrate at the same temperature you'll be measuring at for best accuracy. Most EZO circuits include\n automatic temperature compensation when paired with a \u003ca href=\"\/search?q=atlas+scientific+temperature\"\u003etemperature sensor\u003c\/a\u003e.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812710768929,"sku":"CHEM-pH-10","price":780.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ph-10-00-calibration-hires.jpg?v=1778921538"},{"product_id":"air-quality-monitor-pm-2-5-formaldehyde-temperature-and-humidity-sensor","title":"DFRobot Air Quality Monitor PM2.5+HCHO+T+H - SEN0233","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Temperature with a Sensor Made for Embedded Builds\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAir Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor\u003c\/strong\u003e is a dust sensor designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eParticle Range of measurement:\u003c\/strong\u003e 0.3 ~ 1.0μm; 1.0 ~ 2.5μm; 2.5 ~ 10μm; \u003cstrong\u003eParticle Resolution:\u003c\/strong\u003e 1ug \/ m³.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e High anti-interference performance because of the patent structure of six sides shielding\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature and Humidity output:\u003c\/strong\u003e Temperature and Humidity output\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor size:\u003c\/strong\u003e 0.3 micrometer\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 0.3 ~ 1.0μm; 1.0 ~ 2.5μm; 2.5 ~ 10μm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 50%@0.3μm 98%@\u0026gt;=0.5μm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReadable detail:\u003c\/strong\u003e 1ug \/ m³\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003edust sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-quality-sensor-breakout-voc-and-eco2-ccs811\"\u003eAir Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic\"\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-bme680-temperature-humidity-pressure-and-gas-sensor-stemma-qt\"\u003eAdafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eenvironmental sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for weather stations, room monitors, greenhouses, incubators, and climate data loggers.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAir Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMinimum distinguishable particle diameter\u003c\/th\u003e\n\u003ctd\u003e0.3 micrometer\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Range of measurement\u003c\/th\u003e\n\u003ctd\u003e0.3 ~ 1.0μm; 1.0 ~ 2.5μm; 2.5 ~ 10μm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Counting Efficiency\u003c\/th\u003e\n\u003ctd\u003e50%@0.3μm 98%@\u0026gt;=0.5μm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Effective Range (PM2.5 standard)\u003c\/th\u003e\n\u003ctd\u003e0 ~ 500μg\/m\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Maximum Range (PM2.5 standard)*\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;0 ~ 2000ug \/ m³\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Resolution\u003c\/th\u003e\n\u003ctd\u003e1ug \/ m³\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Maximum Consistency Error (PM2.5 standard data)*\u003c\/th\u003e\n\u003ctd\u003e±10%@100~500μg\/m³ ±10μg\/m³@0~100μg\/m³\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eParticle Standard Volume\u003c\/th\u003e\n\u003ctd\u003e0.1 L\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eAir Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Air Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Air Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor measure?\u003c\/strong\u003e\n It is designed to measure temperature and humidity.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45813715337505,"sku":"SEN0233","price":5725.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/air-quality-monitor-pm-2-5-formaldehyde-temperature-and-humidity-sensor-1033.jpg?v=1689672588"},{"product_id":"analog-dissolved-oxygen-sensor-meter-kit-for-arduino-gravity","title":"DFRobot Dissolved Oxygen Analog Meter Kit - SEN0237-A","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAnalog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity\u003c\/strong\u003e is a chemical sensor module with analog output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eDetection Range:\u003c\/strong\u003e 0~20mg\/L; \u003cstrong\u003ePressure Range:\u003c\/strong\u003e 0~50PSI; \u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3~5.5V.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eGravity Analog Sensor Cable x1:\u003c\/strong\u003e Gravity Analog Sensor Cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWaterproof Gasket x2:\u003c\/strong\u003e Waterproof Gasket x2\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 1 year (normal use)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e 0~3.0V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 0~20mg\/L\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 3.3~5.5V\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/dissolved-oxygen-kit\"\u003eAtlas Scientific Dissolved Oxygen Kit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003eremote probe format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/atlas-scientific-industrial-dissolved-oxygen-probe\"\u003eAtlas Scientific Industrial Dissolved Oxygen Probe\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003edust sensor\u003c\/td\u003e\n\u003ctd\u003eremote probe format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/tds-sensor-meter-analog-for-arduino-gravity\"\u003eTDS Sensor Meter Analog for Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eTDS sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAnalog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eElectrode Service Life\u003c\/th\u003e\n\u003ctd\u003e1 year (normal use)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Signal\u003c\/th\u003e\n\u003ctd\u003e0~3.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDetection Range\u003c\/th\u003e\n\u003ctd\u003e0~20mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePressure Range\u003c\/th\u003e\n\u003ctd\u003e0~50PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e3.3~5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eGalvanic Probe\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003ctd\u003e42mm * 32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCable Length\u003c\/th\u003e\n\u003ctd\u003e2 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Analog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Analog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure dissolved oxygen.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45813870002465,"sku":"SEN0237-A","price":21294.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/analog-dissolved-oxygen-sensor-meter-kit-for-arduino-gravity-hires.jpg?v=1778921274"},{"product_id":"surveyor-analog-ph-kit","title":"Atlas Scientific Surveyor Analog pH Kit - Starter pH Sensor","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eStart Analog pH Monitoring with a Simple Ready-to-Use Kit\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific Surveyor Analog pH Kit\u003c\/strong\u003e is a low-cost analog pH sensing kit built for quick integration and easy setup. It combines the Surveyor™ Analog pH Sensor \/ Meter with a consumer grade pH probe and the buffer solutions needed to get started.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This kit is a good fit when you want a basic analog output instead of a full digital EZO setup, while still using Atlas Scientific sensing hardware.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e This product was previously known as the Gravity Analog pH Kit. It is intended for analog pH monitoring and includes the core probe and calibration items needed to begin.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSimple analog output:\u003c\/strong\u003e Good for projects that prefer a direct analog pH signal\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete starter bundle:\u003c\/strong\u003e Meter, probe, and pH 4, 7, and 10 pouches are included\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow-cost option:\u003c\/strong\u003e A practical entry point for basic pH monitoring\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact board:\u003c\/strong\u003e Small format helps with compact prototypes and test rigs\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful for many liquids:\u003c\/strong\u003e Suitable for general pH checks in DIY and engineering builds\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it for small lab rigs, educational builds, hydroponics projects, aquarium checks, soil and water experiments, and simple controller systems that need analog pH data.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible controller\u003c\/a\u003e, analog input board, display, or simple logger. A probe holder and storage solution can also help with daily use.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Helpful add-ons include extra pH calibration pouches, probe storage solution, replacement probes, isolators, and panel mounts for cleaner installs.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific Surveyor Analog pH Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMain Electronics\u003c\/th\u003e\n \u003ctd\u003eSurveyor Analog pH Sensor \/ Meter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Type\u003c\/th\u003e\n \u003ctd\u003eAnalog\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Included\u003c\/th\u003e\n \u003ctd\u003eConsumer Grade pH Probe\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Style\u003c\/th\u003e\n \u003ctd\u003eDouble junction silver \/ silver chloride\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCalibration Included\u003c\/th\u003e\n \u003ctd\u003e3 x 20ml pH calibration solution pouches\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eIncluded Buffers\u003c\/th\u003e\n \u003ctd\u003epH 4, pH 7, and pH 10\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBoard Size\u003c\/th\u003e\n \u003ctd\u003e56.2mm x 32mm (2.2in x 1.2in)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eApprox. Weight\u003c\/th\u003e\n \u003ctd\u003e15g\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Connect the Surveyor board to a host with an analog input and use the included pH buffers during setup so your readings are ready for real use.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This kit is best when you want a simpler analog path and do not need the digital interface used by Atlas EZO circuits.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Surveyor™ Analog pH Sensor \/ Meter\u003c\/p\u003e\n \u003cp\u003e1 × Consumer Grade pH Probe\u003c\/p\u003e\n \u003cp\u003e1 × 20ml pH 4 calibration pouch\u003c\/p\u003e\n \u003cp\u003e1 × 20ml pH 7 calibration pouch\u003c\/p\u003e\n \u003cp\u003e1 × 20ml pH 10 calibration pouch\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this a digital EZO kit?\u003c\/strong\u003e\n No. This is an analog pH kit built around the Surveyor analog sensor \/ meter.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it include calibration solution?\u003c\/strong\u003e\n Yes. It includes pH 4, 7, and 10 calibration pouches.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this the same as the old Gravity kit?\u003c\/strong\u003e\n Yes. Atlas notes this was previously known as the Gravity Analog pH Kit.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with a microcontroller analog pin?\u003c\/strong\u003e\n Yes. It is made for analog output applications.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45813898805537,"sku":"KIT-103P","price":6999.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/20240815061606cd539dbe385dc68bf87949b4dd60da65.jpg?v=1723703054"},{"product_id":"dissolved-oxygen-test-solution","title":"Atlas Scientific Zero Dissolved Oxygen Calibration Solution","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eVerify and Calibrate Dissolved Oxygen Probes at the Low End\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific Zero Dissolved Oxygen Calibration Set\u003c\/strong\u003e is made for dissolved oxygen probe checks and low-end calibration work. Each pouch contains zero dissolved oxygen calibration solution so you can confirm probe behavior and calibrate the low end of the oxygen scale.\n \u003c\/p\u003e\n\n \u003cp\u003e\n It is a simple but important maintenance item for Atlas dissolved oxygen systems used in labs, field instruments, and water quality builds.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e This solution is for dissolved oxygen probe testing and calibration. It is not a cleaning liquid or general-purpose chemical accessory.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMade for low-end DO calibration:\u003c\/strong\u003e Helps set or confirm the low point of dissolved oxygen measurement\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy pouch format:\u003c\/strong\u003e Pre-measured pouches are simple to store and use\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProbe check tool:\u003c\/strong\u003e Useful for confirming your dissolved oxygen probe is working properly\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAtlas matched solution:\u003c\/strong\u003e Designed for Atlas dissolved oxygen workflows\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGood maintenance item:\u003c\/strong\u003e Handy to keep available for routine service and troubleshooting\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it in calibration routines, maintenance kits, lab benches, field service packs, and troubleshooting workflows for dissolved oxygen measurement systems.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=dissolved+oxygen+probe\"\u003eAtlas dissolved oxygen probe\u003c\/a\u003e, an \u003ca href=\"\/search?q=ezo+dissolved+oxygen\"\u003eAtlas EZO dissolved oxygen circuit\u003c\/a\u003e, and a clean calibration workflow for repeatable results.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Related add-ons include dissolved oxygen probes, EZO DO circuits, maintenance parts, electrolyte solution, and replacement membranes where needed.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific Zero Dissolved Oxygen Calibration Set\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContents\u003c\/th\u003e\n \u003ctd\u003e3 zero dissolved oxygen calibration solution pouches\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eVolume\u003c\/th\u003e\n \u003ctd\u003e20ml per pouch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOxygen Content\u003c\/th\u003e\n \u003ctd\u003e0 mg\/mL\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePrimary Use\u003c\/th\u003e\n \u003ctd\u003eLow-end dissolved oxygen calibration and probe checks\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Use this set when calibrating the low end of your dissolved oxygen scale or when you want to confirm your dissolved oxygen probe is behaving as expected.\n \u003c\/p\u003e\n\n \u003cp\u003e\n For best results, use clean handling steps and follow the calibration process recommended for your dissolved oxygen hardware.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e3 × Zero Dissolved Oxygen Calibration Solution pouches\u003c\/p\u003e\n \u003cp\u003e20ml per pouch\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat is this used for?\u003c\/strong\u003e\n It is used to calibrate the low end of the dissolved oxygen scale and to confirm that a DO probe is working properly.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow many pouches are included?\u003c\/strong\u003e\n Three pouches are included.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow much solution is in each pouch?\u003c\/strong\u003e\n Each pouch contains 20ml.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this for cleaning a probe?\u003c\/strong\u003e\n No. This product is for dissolved oxygen calibration and probe checks.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45813929247009,"sku":"CHEM-DO","price":2489.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ChatGPT_Image_Aug_14_2025_11_29_49_AM.png?v=1755142399"},{"product_id":"dissolved-oxygen-electrolyte-solution","title":"DFRobot Dissolved Oxygen Electrolyte Solution","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThis product is used to replace the electrolyte solution inside the dissolved oxygen probe. This solution can refill up to 25 dissolved oxygen probes.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSPECIFICATIONS:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e50mL of Dissolved Oxygen Electrolyte Solution\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e3mL syringe included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eDOWNLOADS:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.atlas-scientific.com\/_files\/sds\/Dissolved%20Oxygen%20Electrolyte%20Solution%20SDS.pdf\" target=\"_blank\"\u003eDissolved Oxygen Electrolyte Solution SDS\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.atlas-scientific.com\/_files\/sds\/instructions\/do_electrolyte_solution_instructions.pdf\" target=\"_blank\"\u003eDissolved Oxygen Electrolyte Solution Instructions\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45813929705761,"sku":"CHEM-DO-E","price":1099.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/dissolved-oxygen-electrolyte-solution-hires.jpg?v=1778921105"},{"product_id":"ph-probe-atlas-scientific","title":"Atlas Scientific Lab Grade pH Probe - BNC, Replaceable Reference","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eGet Precise pH Readings with a Lab Grade Probe\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific Lab Grade pH Probe\u003c\/strong\u003e is built for high-accuracy pH measurement in demanding lab and engineering work. It uses a double junction design and a Vanadium III tip to improve stability and reduce noise during measurement.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Atlas also highlights the Tyvek™ junction design, which helps hold internal electrolyte longer and supports longer periods between recalibration in the right applications.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e This is a probe only. You still need a compatible Atlas circuit, meter, or transmitter to read and process pH data.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh accuracy probe:\u003c\/strong\u003e Built for precise pH measurement work\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDouble junction design:\u003c\/strong\u003e Helps when measuring harder samples, including protein-rich solutions\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStable readings:\u003c\/strong\u003e Vanadium III tip helps reduce noise and improve stability\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide pH range:\u003c\/strong\u003e Measures from 0 to 14 pH\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast response:\u003c\/strong\u003e Atlas lists 95 percent response in 1 second\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it for lab instruments, benchtop analyzers, water testing rigs, process prototypes, and any setup where accurate pH data matters.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=ezo+ph\"\u003eAtlas EZO pH circuit\u003c\/a\u003e, \u003ca href=\"\/search?q=ph+carrier+board\"\u003ecarrier board\u003c\/a\u003e, and proper calibration solutions for a complete pH measurement setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include pH 4, 7, and 10 calibration solutions, storage solution, probe mounts, cable adapters, and compatible Atlas pH electronics.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific Lab Grade pH Probe\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Type\u003c\/th\u003e\n \u003ctd\u003eLab grade pH probe\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eReference Design\u003c\/th\u003e\n \u003ctd\u003eDouble junction silver \/ silver chloride\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003epH Range\u003c\/th\u003e\n \u003ctd\u003e0 to 14\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResolution\u003c\/th\u003e\n \u003ctd\u003e+\/- 0.001\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eAccuracy\u003c\/th\u003e\n \u003ctd\u003e+\/- 0.002\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResponse Time\u003c\/th\u003e\n \u003ctd\u003e95% in 1 second\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTemperature Range\u003c\/th\u003e\n \u003ctd\u003e-5C to 99C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax Pressure\u003c\/th\u003e\n \u003ctd\u003e100 PSI\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax Depth\u003c\/th\u003e\n \u003ctd\u003e70m \/ 230ft\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eConnector\u003c\/th\u003e\n \u003ctd\u003eMale SMA \/ Male BNC optional\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCable Length\u003c\/th\u003e\n \u003ctd\u003e1 meter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInternal Temperature Sensor\u003c\/th\u003e\n \u003ctd\u003eNo\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTime Before Recalibration\u003c\/th\u003e\n \u003ctd\u003eAbout 1 year\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eLife Expectancy\u003c\/th\u003e\n \u003ctd\u003eAbout 2.5 years or more\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Connect the probe to compatible Atlas pH electronics, then calibrate with the proper pH buffers before use. The probe is intended for accurate measurement rather than simple hobby-only checks.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Because this is a probe-only product, plan for matching electronics, calibration solutions, and a suitable mounting method in your finished build.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Atlas Scientific Lab Grade pH Probe\u003c\/p\u003e\n \u003cp\u003eNote: Reading electronics and calibration solutions are sold separately\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat pH range does it cover?\u003c\/strong\u003e\n Atlas lists a 0 to 14 pH range.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it have a built-in temperature sensor?\u003c\/strong\u003e\n No. Atlas lists no internal temperature sensor for this probe.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow accurate is it?\u003c\/strong\u003e\n Atlas lists accuracy at plus or minus 0.002 pH.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this just the probe?\u003c\/strong\u003e\n Yes. You need compatible Atlas electronics to read it.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45813930656033,"sku":"ENV-40-pH","price":5985.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/202411130318598ad92d2c4c8b5b0ed28074a8d28ce1b9.png?v=1731468225"},{"product_id":"tds-sensor-meter-analog-for-arduino-gravity","title":"DFRobot TDS Sensor Meter Analog - SEN0244","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eTDS Sensor Meter Analog for Arduino Gravity\u003c\/strong\u003e is a tds sensor with analog output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eTDS Measurement Range:\u003c\/strong\u003e 0 ~ 1000ppm; \u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 0 ~ 2.3V; \u003cstrong\u003eGood Compatibility Output:\u003c\/strong\u003e 0~2.3V analog signal output, compatible with 5V or 3.3V controller.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eWaterproof Probe:\u003c\/strong\u003e Waterproof Probe\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTDS Sensor Meter Analog:\u003c\/strong\u003e TDS Sensor Meter Analog for Arduino Gravity x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWaterproof TDS Probe x1:\u003c\/strong\u003e Waterproof TDS Probe x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e PH2.0-3P\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e 0~2.3V analog signal output, compatible with 5V or 3.3V controller\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 0 ~ 2.3V\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTDS Sensor Meter Analog for Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTDS sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/analog-dissolved-oxygen-sensor-meter-kit-for-arduino-gravity\"\u003eAnalog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-meter-analog-kit-arduino-compatible\"\u003epH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/dissolved-oxygen-kit\"\u003eAtlas Scientific Dissolved Oxygen Kit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003eremote probe format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eTDS Sensor Meter Analog for Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModule Interface\u003c\/th\u003e\n\u003ctd\u003ePH2.0-3P\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eElectrode Interface\u003c\/th\u003e\n\u003ctd\u003eXH2.54-2P\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eConnection Interface\u003c\/th\u003e\n\u003ctd\u003eXH2.54-2P\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eGood Compatibility Output\u003c\/th\u003e\n\u003ctd\u003e0~2.3V analog signal output, compatible with 5V or 3.3V controller\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Voltage\u003c\/th\u003e\n\u003ctd\u003e0 ~ 2.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTDS Measurement Range\u003c\/th\u003e\n\u003ctd\u003e0 ~ 1000ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWide Voltage Input\u003c\/th\u003e\n\u003ctd\u003e3.3~5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInput Voltage\u003c\/th\u003e\n\u003ctd\u003e3.3 ~ 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × TDS Sensor Meter Analog for Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the TDS Sensor Meter Analog for Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure total dissolved solids.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45813933670689,"sku":"SEN0244","price":1239.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/tds-sensor-meter-analog-for-arduino-gravity-hires.jpg?v=1778921662"},{"product_id":"ph-sensor-meter-analog-spear-tip-kit-for-soil-and-food-applications-gravity","title":"DFRobot pH Sensor Spear-Tip Analog Kit - SEN0249","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003epH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/strong\u003e is a ph sensor with analog output designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eMeasuring Range:\u003c\/strong\u003e 0~10pH; \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog; \u003cstrong\u003eAccuracy:\u003c\/strong\u003e ± 0.1pH.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eGravity Analog Cable 3Pin x1:\u003c\/strong\u003e Gravity Analog Cable 3Pin x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 0~10pH\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e ± 0.1pH\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 43mm×32mm(1.69inch*1.26inch)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor size:\u003c\/strong\u003e 850mm (BNC connector included)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e + 5.00V\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-7-00-calibration\"\u003epH 7.00 Calibration Solution Liquid\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003emodel 7.00\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-4-00-calibration\"\u003epH 4.00 Calibration Solution Liquid\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003emodel 4.00\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-10-00-calibration\"\u003epH 10.00 Calibration Solution Liquid\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003emodel 10.00\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003epH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasuring Range\u003c\/th\u003e\n\u003ctd\u003e0~10pH\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e± 0.1pH\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003ctd\u003e43mm×32mm(1.69inch*1.26inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWire Length\u003c\/th\u003e\n\u003ctd\u003e850mm (BNC connector included)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInput Power\u003c\/th\u003e\n\u003ctd\u003e+ 5.00V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOuput Signal\u003c\/th\u003e\n\u003ctd\u003e0 ~ 4.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eResponse Time\u003c\/th\u003e\n\u003ctd\u003e≤2min(in standard buffer solution)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eShell Material\u003c\/th\u003e\n\u003ctd\u003ePolyoxymethylene (POM)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × pH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the pH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity measure?\u003c\/strong\u003e\n It is designed to measure pH.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45813969256737,"sku":"SEN0249","price":10470.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ph-sensor-meter-analog-spear-tip-kit-for-soil-and-food-applications-gravity-hires.jpg?v=1778921539"},{"product_id":"air-quality-sensor-sgp30-breakout-voc-and-eco2-adafruit","title":"Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Levels and Air Changes in Real Time\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAir Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit\u003c\/strong\u003e is a gas sensor with i2c designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e I2C.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e I2C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-quality-sensor-breakout-voc-and-eco2-ccs811\"\u003eAir Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic\"\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-ens160-mox-gas-sensor-sciosense-ccs811-upgrade-stemma-qt-qwiic\"\u003eAdafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for indoor air monitors, gas leak alarms, ventilation control, safety demos, and classroom experiments.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus an \u003ca href=\"\/search?q=I2C+cable\"\u003eI2C cable\u003c\/a\u003e or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAir Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Dimensions\u003c\/th\u003e\n\u003ctd\u003e17.9mm x 17.9mm x 2.9mm \/ 0.7\" x 0.7\" x 0.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e1.1g \/ 0.0oz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect \u003cstrong\u003eVCC\u003c\/strong\u003e, \u003cstrong\u003eGND\u003c\/strong\u003e, \u003cstrong\u003eSDA\u003c\/strong\u003e, and \u003cstrong\u003eSCL\u003c\/strong\u003e to your controller. Use the correct board voltage and I2C address in your code. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Air Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Air Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this I2C sensor?\u003c\/strong\u003e\n This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813990195489,"sku":"3709","price":1470.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/3709-07.jpg?v=1761379743"},{"product_id":"air-quality-sensor-breakout-voc-and-eco2-ccs811","title":"Air Quality Sensor CCS811 VOC + eCO2 Breakout","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Levels and Air Changes in Real Time\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAir Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/strong\u003e is a gas sensor with i2c designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e I2C.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e I2C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-quality-sensor-sgp30-breakout-voc-and-eco2-adafruit\"\u003eAir Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic\"\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-ens160-mox-gas-sensor-sciosense-ccs811-upgrade-stemma-qt-qwiic\"\u003eAdafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for indoor air monitors, gas leak alarms, ventilation control, safety demos, and classroom experiments.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus an \u003ca href=\"\/search?q=I2C+cable\"\u003eI2C cable\u003c\/a\u003e or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAir Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Dimensions\u003c\/th\u003e\n\u003ctd\u003e21.0mm x 18.0mm x 3.0mm \/ 0.8\" x 0.7\" x 0.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e1.2g \/ 0.0oz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect \u003cstrong\u003eVCC\u003c\/strong\u003e, \u003cstrong\u003eGND\u003c\/strong\u003e, \u003cstrong\u003eSDA\u003c\/strong\u003e, and \u003cstrong\u003eSCL\u003c\/strong\u003e to your controller. Use the correct board voltage and I2C address in your code. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Air Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Air Quality Sensor Breakout VOC and eCO2 CCS811 measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this I2C sensor?\u003c\/strong\u003e\n This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45813991145761,"sku":"AB171","price":539.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/air-quality-sensor-breakout-voc-and-eco2-ccs811-1272.jpg?v=1689673567"},{"product_id":"temperature-and-humidity-sensor-si7021-breakout-board-adafruit","title":"Adafruit Si7021 Temperature + Humidity Breakout - 3251","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Temperature with a Sensor Made for Embedded Builds\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eTemperature and Humidity Sensor Si7021 Breakout Board\u003c\/strong\u003e is a temperature and humidity sensor with i2c designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e I2C.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e I2C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e temperature logging, thermal control, weather nodes, and equipment monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature and Humidity Sensor Si7021 Breakout Board\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/temperature-and-humidity-htu21d-f-sensor-board\"\u003eTemperature And Humidity Htu21D-F Sensor Board\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/temperature-and-humidity-sensor-sensiron-sht31-d-breakout-adafruit\"\u003eTemperature and Humidity Sensor Sensiron SHT31-D Breakout Adafruit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, humidity sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/temperature-and-humidity-sensor-dht22-gravity\"\u003eTemperature and Humidity Sensor DHT22 Module\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with digital output\u003c\/td\u003e\n\u003ctd\u003edigital output, humidity sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for weather stations, room monitors, greenhouses, incubators, and climate data loggers.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus an \u003ca href=\"\/search?q=I2C+cable\"\u003eI2C cable\u003c\/a\u003e or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include probe mounts, thermal paste if needed, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eTemperature and Humidity Sensor Si7021 Breakout Board\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Dimensions\u003c\/th\u003e\n\u003ctd\u003e17.8mm x 15.3mm x 3.0mm \/ 0.7\" x 0.6\" x 0.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e1.0g \/ 0.0oz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003ethermal heat temperature sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect \u003cstrong\u003eVCC\u003c\/strong\u003e, \u003cstrong\u003eGND\u003c\/strong\u003e, \u003cstrong\u003eSDA\u003c\/strong\u003e, and \u003cstrong\u003eSCL\u003c\/strong\u003e to your controller. Use the correct board voltage and I2C address in your code. Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Temperature and Humidity Sensor Si7021 Breakout Board\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Temperature and Humidity Sensor Si7021 Breakout Board measure?\u003c\/strong\u003e\n It is designed to measure temperature and humidity.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this I2C sensor?\u003c\/strong\u003e\n This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat affects accuracy?\u003c\/strong\u003e\n Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813991866657,"sku":"3251","price":88.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/temperature-and-humidity-sensor-si7021-breakout-board-1273.jpg?v=1689673571"},{"product_id":"temperature-and-humidity-sensor-sensiron-sht31-d-breakout-adafruit","title":"Adafruit Sensirion SHT31-D Temp+Humidity Breakout - 2857","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Temperature with a Sensor Made for Embedded Builds\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eTemperature and Humidity Sensor Sensiron SHT31-D Breakout Adafruit\u003c\/strong\u003e is a temperature and humidity sensor with i2c designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e I2C.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 0.8g\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e I2C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e temperature logging, thermal control, weather nodes, and equipment monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature and Humidity Sensor Sensiron SHT31-D Breakout Adafruit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/temperature-and-humidity-sensor-si7021-breakout-board-adafruit\"\u003eTemperature and Humidity Sensor Si7021 Breakout Board\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003ehumidity sensing, temperature sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/temperature-humidity-sensor-hdc1000-grove\"\u003eTemperature Humidity Sensor HDC1080\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003edigital output, humidity sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/temperature-and-humidity-sensor-dht22-gravity\"\u003eTemperature and Humidity Sensor DHT22 Module\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with digital output\u003c\/td\u003e\n\u003ctd\u003edigital output, humidity sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for weather stations, room monitors, greenhouses, incubators, and climate data loggers.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus an \u003ca href=\"\/search?q=I2C+cable\"\u003eI2C cable\u003c\/a\u003e or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include probe mounts, thermal paste if needed, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eTemperature and Humidity Sensor Sensiron SHT31-D Breakout Adafruit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e0.8g\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003ethermal heat temperature sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect \u003cstrong\u003eVCC\u003c\/strong\u003e, \u003cstrong\u003eGND\u003c\/strong\u003e, \u003cstrong\u003eSDA\u003c\/strong\u003e, and \u003cstrong\u003eSCL\u003c\/strong\u003e to your controller. Use the correct board voltage and I2C address in your code. Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Temperature and Humidity Sensor Sensiron SHT31-D Breakout Adafruit\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Temperature and Humidity Sensor Sensiron SHT31-D Breakout Adafruit measure?\u003c\/strong\u003e\n It is designed to measure temperature and humidity.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this I2C sensor?\u003c\/strong\u003e\n This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat affects accuracy?\u003c\/strong\u003e\n Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813992587553,"sku":"2857","price":869.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/2857-03.jpg?v=1761379964"},{"product_id":"infrared-co2-sensor-analog-for-arduino-0-5000-ppm-gravity","title":"DFRobot Gravity Infrared Analog CO2 Sensor 0-5000ppm","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable Infrared CO2 Sensor Analog For Arduino 0~5000 ppm Gravity Sensing to Your Next Build\u003c\/h2\u003e\n\n \u003cp\u003e\n The concentration of carbon dioxide (0.03% usuallly) is related to daily life. Recently, there’s a study showing that the atmospheric CO2 content has reached 0.0385% (385 ppm) which is the highest value since 2.1 million years. The raise of atmospheric CO2 content to some extent results in global climate change. How to accurately measure the carbon dioxide gas concentration is becoming a universal research topic.\n \u003c\/p\u003e\n\n \u003cp\u003e\n DFRobot released its latest high-precision analog infrared CO2 sensor. The effectively measuring range is from 0 to 5000ppm. This sensor is based on non-dispersive infrared ( NDIR ) technology and has good selectivity and oxygen-free dependency. Besides, its service life could up to 5 years! It integrates temperature compensation and support DAC output. Most importantly, the product is easy to use; it is compatible with all types of microcontrollers such as Arduino with ADC function.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eWaterproof and anti-corrosion\u003c\/li\u003e\n \u003cli\u003eHigh sensitivity\u003c\/li\u003e\n \u003cli\u003eLow power consumption\u003c\/li\u003e\n \u003cli\u003eExcellent stability\u003c\/li\u003e\n \u003cli\u003eTemperature compensation\u003c\/li\u003e\n \u003cli\u003eExcellent linear output\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the infrared co2 sensor analog for arduino 0~5000 ppm gravity.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus sensor cables, headers, or a matching expansion shield for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eInfrared CO2 Sensor Analog For Arduino 0~5000 ppm Gravity\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eSEN0219\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eAnalog, USB\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eGas Detection\u003c\/th\u003e\n \u003ctd\u003eCarbon Dioxide\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating voltage\u003c\/th\u003e\n \u003ctd\u003e4.5 ~ 5.5V DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eAverage Current\u003c\/th\u003e\n \u003ctd\u003e\u0026lt;60mA @ 5V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePeak Current\u003c\/th\u003e\n \u003ctd\u003e150mA @ 5V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Signal\u003c\/th\u003e\n \u003ctd\u003eAnalog output (0.4 ~ 2V)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMeasuring Range\u003c\/th\u003e\n \u003ctd\u003e0 ~ 5000ppm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/search-SEN0219.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/Gravity:_Analog_Infrared_CO2_Sensor_For_Arduino_SKU:_SEN0219\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Infrared CO2 Sensor Analog For Arduino 0~5000 ppm Gravity\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this for logging or monitoring projects?\u003c\/strong\u003e Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45814017327393,"sku":"SEN0219","price":3147.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/infrared-co2-sensor-analog-for-arduino-0-5000-ppm-gravity-hires.jpg?v=1778921417"},{"product_id":"surveyor-analog-kit-atlas-scientific","title":"Atlas Scientific Surveyor Analog ORP Kit - Complete ORP Sensor Kit","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Simple Analog ORP Monitoring to Your Build\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAtlas Scientific Surveyor Analog ORP Kit\u003c\/strong\u003e is a low-cost analog ORP sensing kit made for fast setup and straightforward integration. It includes the Surveyor™ Analog ORP Sensor \/ Meter, a consumer grade ORP probe, and a calibration pouch to help you get started.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Atlas positions this kit as a practical option when you want basic analog ORP output for engineering work without stepping into a more complex digital setup.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e This product was previously known as the Gravity Analog ORP Kit. It is designed for analog ORP measurement and includes the key parts needed for initial setup.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAnalog ORP output:\u003c\/strong\u003e Simple choice for controllers that use analog inputs\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReady-to-start kit:\u003c\/strong\u003e Includes the sensor board, probe, and calibration pouch\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow-cost Atlas option:\u003c\/strong\u003e Good for entry-level ORP integration and testing\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e Small board works well in compact prototypes\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGood for quick builds:\u003c\/strong\u003e Easier than sourcing meter, probe, and calibration parts separately\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it for water treatment experiments, aquarium projects, oxidation-reduction monitoring, education builds, and custom analog controller systems.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible controller\u003c\/a\u003e, a simple analog logger, display module, or panel meter. Probe holders and enclosure parts also help for cleaner setups.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Helpful add-ons include spare ORP calibration solution, replacement ORP probes, isolators, and mounting hardware for tanks, pipes, and bench rigs.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific Surveyor Analog ORP Kit\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMain Electronics\u003c\/th\u003e\n \u003ctd\u003eSurveyor Analog ORP Sensor \/ Meter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Type\u003c\/th\u003e\n \u003ctd\u003eAnalog\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Included\u003c\/th\u003e\n \u003ctd\u003eConsumer Grade ORP Probe\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCalibration Included\u003c\/th\u003e\n \u003ctd\u003e1 x 20ml ORP calibration solution pouch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCalibration Value\u003c\/th\u003e\n \u003ctd\u003e225mV\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBoard Size\u003c\/th\u003e\n \u003ctd\u003e56.2mm x 32mm (2.2in x 1.2in)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eApprox. Weight\u003c\/th\u003e\n \u003ctd\u003e15g\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Connect the Surveyor board to your analog input hardware, then use the included ORP calibration pouch during setup before you begin collecting readings.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This kit is best when you want a simple analog ORP path and do not need the digital interface and feature set of Atlas EZO products.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Surveyor™ Analog ORP Sensor \/ Meter\u003c\/p\u003e\n \u003cp\u003e1 × Consumer Grade ORP Probe\u003c\/p\u003e\n \u003cp\u003e1 × 20ml ORP calibration solution pouch (225mV)\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this the old Gravity ORP kit?\u003c\/strong\u003e\n Yes. Atlas notes this product was previously known as the Gravity Analog ORP Kit.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it include a probe?\u003c\/strong\u003e\n Yes. A consumer grade ORP probe is included.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it include calibration solution?\u003c\/strong\u003e\n Yes. One 225mV ORP calibration pouch is included.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this analog or digital?\u003c\/strong\u003e\n This is an analog ORP kit built around the Surveyor analog sensor \/ meter.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45814020178209,"sku":"KIT-102O","price":7999.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/202408150648204274d3f22f4473e291585e02d1035ffa.jpg?v=1723704811"},{"product_id":"gas-sensor-mq-131-ozone-module","title":"Gas Sensor MQ-131 Ozone Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Sensor MQ-131 Ozone Module\u003c\/strong\u003e is a gas sensor designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e UART.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e the dual signal output (analog output, and TTL-level output);\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eThe analog output increases:\u003c\/strong\u003e the analog output increases with the concentration, the higher the voltage the higher the concentration;\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eThe ozone gas:\u003c\/strong\u003e the ozone gas with high sensitivity (detection concentration range 10PPB-2PPM Ozone)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Semiconductor\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e UART\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Sensor MQ-131 Ozone Module\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq4\"\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Sensor MQ-131 Ozone Module\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eModel No.\u003c\/th\u003e\n\u003ctd\u003eMQ-131\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSensor Type\u003c\/th\u003e\n\u003ctd\u003eSemiconductor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePreheat time\u003c\/th\u003e\n\u003ctd\u003eOver 48 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDetection Gas\u003c\/th\u003e\n\u003ctd\u003eOzone\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eConcentration\u003c\/th\u003e\n\u003ctd\u003e10PPB-2PPM Ozone\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eStandard test circuit\u003c\/th\u003e\n\u003ctd\u003eVc:5.0V±0.1V VH: 5.0V±0.1V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eStandard Encapsulation\u003c\/th\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eUART\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then wire \u003cstrong\u003eTX\u003c\/strong\u003e and \u003cstrong\u003eRX\u003c\/strong\u003e to a serial-capable controller at the correct logic level and baud rate. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Sensor MQ-131 Ozone Module\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Sensor MQ-131 Ozone Module measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this UART sensor?\u003c\/strong\u003e\n This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814153117985,"sku":"AM315","price":1085.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/gas-sensor-mq-131-ozone-module-hires.jpg?v=1778921385"},{"product_id":"electrical-conductivity-k10-kit","title":"DFRobot Electrical Conductivity K10 Sensor Kit - DFR0300-H","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eElectrical Conductivity K10 Sensor Kit for Arduino\u003c\/strong\u003e is an ec sensor designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eSupport Detection Range:\u003c\/strong\u003e 10~100ms\/cm; \u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 0~40°C; \u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 0~3.2V.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 0~3.2V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 10~100ms\/cm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e ±5% F.S.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 42mm x 32mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Laboratory Grade\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Conductivity K10 Sensor Kit for Arduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEC sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/analog-electrical-conductivity-meter-with-temperature-compensation\"\u003eElectrical Conductivity K1 Sensor Kit for Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eEC sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eremote probe format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/conductivity-k-1-0-kit\"\u003eAtlas Scientific Conductivity K 1.0 Kit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eEC sensor\u003c\/td\u003e\n\u003ctd\u003eremote probe format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-meter-analog-kit-arduino-compatible\"\u003epH Meter Sensor Analog Kit (Arduino Compatible)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eElectrical Conductivity K10 Sensor Kit for Arduino\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Voltage\u003c\/th\u003e\n\u003ctd\u003e0~3.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupport Detection Range\u003c\/th\u003e\n\u003ctd\u003e10~100ms\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003e0~40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e3.0~5.0V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMeasurement Accuracy\u003c\/th\u003e\n\u003ctd\u003e±5% F.S.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eBoard size\u003c\/th\u003e\n\u003ctd\u003e42mm x 32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProbe Type\u003c\/th\u003e\n\u003ctd\u003eLaboratory Grade\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProbe Life\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;0.5 year (Actual life is related to frequency of use and scene)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eElectrical Conductivity K10 Sensor Kit for Arduino\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Electrical Conductivity K10 Sensor Kit for Arduino\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Electrical Conductivity K10 Sensor Kit for Arduino measure?\u003c\/strong\u003e\n It is designed to measure electrical conductivity.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45816106942753,"sku":"DFR0300-H","price":10068.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/electrical-conductivity-k10-sensor-kit-for-arduino-1713.jpg?v=1689679214"},{"product_id":"gas-sensor-mq6-1","title":"Gas Sensor MQ6 LPG - Butane\/Propane Detector","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas Sensor MQ6 LPG\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e Analog.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas Sensor MQ6 LPG\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq6\"\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas Sensor MQ6 LPG\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas Sensor MQ6 LPG\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas Sensor MQ6 LPG measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45816109138209,"sku":"AJ369-6","price":39.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/gas-sensor-mq6-1-white.jpg?v=1778911706"},{"product_id":"ph-sensor-meter-analog-kit-v2-gravity-for-arduino","title":"DFRobot Gravity Analog pH Sensor Kit V2 for Arduino","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable pH Sensor Meter Analog Kit V2 Gravity for Arduino Sensing to Your Next Build\u003c\/h2\u003e\n\n \u003cp\u003e\n This pH meter V2 is designed to measure the acidity or alkalinity of a solution. Common uses are for aquaponics, aquaculture, and environmental water testing.\n \u003c\/p\u003e\n\n \u003cp\u003e\n As an upgraded version of pH meter V1, this product greatly improves the precision and user experience. The onboard voltage regulator chip supports the wide voltage supply of 3.3~5.5V, which is compatible with 5V and 3.3V main control board. The output signal filtered by hardware has low jitter. The software library adopts the two-point calibration method, and can automatically identify two standard buffer solutions (4.0 and 7.0), so simple and convenient. You may also check Liquid Sensor Selection Guide to get better familiar with our liquid sensor series.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e3.3~5.5V wide voltage input\u003c\/li\u003e\n \u003cli\u003eHardware filtered output signal, low jitter\u003c\/li\u003e\n \u003cli\u003eGravity connector and BNC connector, plug and play, no welding\u003c\/li\u003e\n \u003cli\u003eSoftware library supports two-point calibration, and automatically identifies standard buffer solution\u003c\/li\u003e\n \u003cli\u003eUniform size and connector, convenient for the design of mechanical structures\u003c\/li\u003e\n \u003cli\u003eSignal Conversion Board (Transmitter) V2\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the ph sensor meter analog kit v2 gravity for arduino.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus sensor cables, headers, or a matching expansion shield for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003epH Sensor Meter Analog Kit V2 Gravity for Arduino\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eSEN0161-V2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eAnalog\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSupply voltage\u003c\/th\u003e\n \u003ctd\u003e3.3~5.5V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Voltage\u003c\/th\u003e\n \u003ctd\u003e0~3.0V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProbe Connector\u003c\/th\u003e\n \u003ctd\u003eBNC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSignal Connector\u003c\/th\u003e\n \u003ctd\u003ePH2.0-3P\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMeasurement Accuracy\u003c\/th\u003e\n \u003ctd\u003e±0.1@25℃\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDimensions\u003c\/th\u003e\n \u003ctd\u003e42mm*32mm\/1.66*1.26in\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Check the supported input voltage before wiring so the module matches your controller and power source. For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/search-SEN0161-V2.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/Gravity:_Analog_pH_Sensor\/Meter_Kit_V2_SKU:SEN0161-V2\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/Gravity:_Analog_pH_Sensor\/Meter_Kit_V2_SKU:SEN0161-V2#More_Documents\" target=\"_blank\" rel=\"noopener\"\u003eMore Documents\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × pH Sensor Meter Analog Kit V2 Gravity for Arduino\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this for logging or monitoring projects?\u003c\/strong\u003e Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45836289081633,"sku":"SEN0161-V2","price":4977.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/ph-sensor-meter-analog-kit-v2-gravity-for-arduino-1741.jpg?v=1689739423"},{"product_id":"glideforce-md122006-p-medium-duty-linear-actuator-with-feedback","title":"Pololu Glideforce MD122006-P Linear Actuator w\/ Feedback","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGlideforce MD122006-P Medium-Duty Linear Actuator with Feedback\u003c\/strong\u003e is a chemical sensor module designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eNominal operating voltage:\u003c\/strong\u003e 12 V.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 225 lbs [100 kgf or 1000 N]\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 12 V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor size:\u003c\/strong\u003e 3\/8″ [10 mm]\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e water quality work, lab projects, and environmental monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlideforce MD122006-P Medium-Duty Linear Actuator with Feedback\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGlideforce MD122006-P Medium-Duty Linear Actuator with Feedback\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eRated dynamic load capacity\u003c\/th\u003e\n\u003ctd\u003e225 lbs [100 kgf or 1000 N]\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMaximum static load\u003c\/th\u003e\n\u003ctd\u003e1000 lbs [450 kgf or 4500 N]\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eNominal operating voltage\u003c\/th\u003e\n\u003ctd\u003e12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMounting hole diameter\u003c\/th\u003e\n\u003ctd\u003e3\/8″ [10 mm]\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eIP rating\u003c\/th\u003e\n\u003ctd\u003eIP65 (total dust protection, water resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eNoise level\u003c\/th\u003e\n\u003ctd\u003e≤ 70 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWorking temperature\u003c\/th\u003e\n\u003ctd\u003e-13°F [-25°C] to 149°F [65°C]\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeed at 12 V, no load\u003c\/th\u003e\n\u003ctd\u003e0.58 in\/s [14.7 mm\/s]\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eGlideforce MD122006-P Medium-Duty Linear Actuator with Feedback\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Glideforce MD122006-P Medium-Duty Linear Actuator with Feedback\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Glideforce MD122006-P Medium-Duty Linear Actuator with Feedback measure?\u003c\/strong\u003e\n It is designed to measure force, bend, muscle activity, or weight.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pololu","offers":[{"title":"Default Title","offer_id":45836296454433,"sku":"ENV-50-pH","price":12000.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/glideforce-md122006-p-medium-duty-linear-actuator-with-feedback-white.jpg?v=1778911987"},{"product_id":"conductivity-calibration-1-0-set","title":"Atlas Scientific Conductivity K 1.0 Calibration Solution Set","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":45836326600993,"sku":"chem-EC-1-0","price":1000.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/conductivity-calibration-1-0-set-white.jpg?v=1778911255"},{"product_id":"ccs811-si7021-bmp280-carbon-monoxide-temperature-and-humidity-sensor","title":"CCS811+SI7021+BMP280 - CO + Temp + Humid + Pressure","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Temperature with a Sensor Made for Embedded Builds\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eCCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor\u003c\/strong\u003e is a temperature and humidity sensor with i2c designed for climate logging, weather nodes, and room monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply:\u003c\/strong\u003e 3.3V; \u003cstrong\u003eInterface:\u003c\/strong\u003e I2C; \u003cstrong\u003eRelative humidity accuracy:\u003c\/strong\u003e + 2% (typical).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eExcellent stability under high humidity:\u003c\/strong\u003e Excellent stability under high humidity\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 3.3V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 100nA\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e + 2% (typical)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 15x21mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e electronic components\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003etemperature and humidity sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-bme680-temperature-humidity-pressure-and-gas-sensor-stemma-qt\"\u003eAdafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eenvironmental sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-quality-sensor-breakout-voc-and-eco2-ccs811\"\u003eAir Quality Sensor Breakout VOC and eCO2 CCS811\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/carbon-monoxide-analog-sensor-mq7-for-arduino-gravity\"\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for weather stations, room monitors, greenhouses, incubators, and climate data loggers.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus an \u003ca href=\"\/search?q=I2C+cable\"\u003eI2C cable\u003c\/a\u003e or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eCCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply\u003c\/th\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSleep mode current\u003c\/th\u003e\n\u003ctd\u003e100nA\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eRelative humidity accuracy\u003c\/th\u003e\n\u003ctd\u003e+ 2% (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTemperature accuracy\u003c\/th\u003e\n\u003ctd\u003e+ 0.2 C (typical value)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e15x21mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eelectronic components\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect \u003cstrong\u003eVCC\u003c\/strong\u003e, \u003cstrong\u003eGND\u003c\/strong\u003e, \u003cstrong\u003eSDA\u003c\/strong\u003e, and \u003cstrong\u003eSCL\u003c\/strong\u003e to your controller. Use the correct board voltage and I2C address in your code. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the CCS811 SI7021 BMP280 Carbon Monoxide Temperature and Humidity Sensor measure?\u003c\/strong\u003e\n It is designed to measure temperature and humidity.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this I2C sensor?\u003c\/strong\u003e\n This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45836630393121,"sku":"AB650","price":1299.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/ccs811-si7021-bmp280-carbon-monoxide-temperature-and-humidity-sensor-hires.jpg?v=1778921317"},{"product_id":"formaldehyde-hcho-sensor-gravity","title":"DFRobot Gravity Formaldehyde HCHO Sensor","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eFormaldehyde HCHO Sensor Gravity\u003c\/strong\u003e is an environmental sensor designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eDetection Range:\u003c\/strong\u003e 0~5ppm; \u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 3.3~6V; \u003cstrong\u003eOutput Signal:\u003c\/strong\u003e Optional DAC(0.4～2V,for 0-5ppm) or UART(9600).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Gravity-3Pin\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e Optional DAC(0.4～2V,for 0-5ppm) or UART(9600)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 0~5ppm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 3.3~6V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReadable detail:\u003c\/strong\u003e 0.01ppm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 22 g\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFormaldehyde HCHO Sensor Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eenvironmental sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/oxygen-sensor-i2c-gravity-by-dfrobot\"\u003eOxygen Sensor I2C Gravity by DFRobot\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/analog-dissolved-oxygen-sensor-meter-kit-for-arduino-gravity\"\u003eAnalog Dissolved Oxygen Sensor Meter Kit For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003echemical sensor module with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-quality-monitor-pm-2-5-formaldehyde-temperature-and-humidity-sensor\"\u003eAir Quality Monitor PM 2.5, Formaldehyde, Temperature \u0026amp; Humidity Sensor\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003edust sensor\u003c\/td\u003e\n\u003ctd\u003egas detection, humidity sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eFormaldehyde HCHO Sensor Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface Type\u003c\/th\u003e\n\u003ctd\u003eGravity-3Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Signal\u003c\/th\u003e\n\u003ctd\u003eOptional DAC(0.4～2V,for 0-5ppm) or UART(9600)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDetection Range\u003c\/th\u003e\n\u003ctd\u003e0~5ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInput Voltage\u003c\/th\u003e\n\u003ctd\u003e3.3~6V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd\u003e0.01ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e22 g\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDimension\u003c\/th\u003e\n\u003ctd\u003e38*28*15mm\/1.50*1.10*0.59inches\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTarget Gas\u003c\/th\u003e\n\u003ctd\u003eHCHO\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then wire \u003cstrong\u003eTX\u003c\/strong\u003e and \u003cstrong\u003eRX\u003c\/strong\u003e to a serial-capable controller at the correct logic level and baud rate. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Formaldehyde HCHO Sensor Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Formaldehyde HCHO Sensor Gravity measure?\u003c\/strong\u003e\n It is designed to measure sensor data for embedded projects.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this UART sensor?\u003c\/strong\u003e\n This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45836962824481,"sku":"SEN0231","price":2707.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/formaldehyde-hcho-sensor-gravity-1934.jpg?v=1689740188"},{"product_id":"oxygen-sensor-i2c-gravity-by-dfrobot","title":"DFRobot Gravity I2C Oxygen Sensor - 0-25% O2 Concentration","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable Oxygen Sensor I2C Gravity by DFRobot Sensing to Your Next Build\u003c\/h2\u003e\n\n \u003cp\u003e\n The Gravity: I2C Oxygen Sensor is based on electrochemical principles and it can measure the ambient O2 concentration accurately and conveniently. With high anti-interference ability, high stability, and high sensitivity, this Arduino-compatible oxygen sensor can be widely applied to fields like portable devices, air quality monitoring devices, and industries, mines, warehouses, and other spaces where the air is not easy to circulate.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This compact oxygen sensor supports I2C output, it can be calibrated in the air, can accurately measure the oxygen concentration in the environment. It is compatible with many mainboards like Arduino Uno, esp32, Raspberry Pi, and so on. Its effective range is 0~25%Vol, and resolution can reach to 0.15%Vol. It supports a wide range of input voltage: 3.3V to 5.5V. Moreover, the lifetime is as long as 2 years. With a simple Gravity interface and practical sample code, you can build your own oxygen concentration monitor easily and conveniently.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eHigh sensitivity\u003c\/li\u003e\n \u003cli\u003eI2C Interface\u003c\/li\u003e\n \u003cli\u003eCompatible with both 3.3V and 5V micro-controllers\u003c\/li\u003e\n \u003cli\u003ePolarity protection\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDetection of Gas:\u003c\/strong\u003e oxygen\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3 to 5.5V DC\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the oxygen sensor i2c gravity by dfrobot.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus sensor cables, headers, or a matching expansion shield for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eOxygen Sensor I2C Gravity by DFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eSEN0322\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eI2C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDetection of Gas\u003c\/th\u003e\n \u003ctd\u003eoxygen\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating voltage\u003c\/th\u003e\n \u003ctd\u003e3.3 to 5.5V DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Signal\u003c\/th\u003e\n \u003ctd\u003eI2C output\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMeasurement Range\u003c\/th\u003e\n \u003ctd\u003e0~25%Vol\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Measurement limit\u003c\/th\u003e\n \u003ctd\u003e30%Vol\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResolution\u003c\/th\u003e\n \u003ctd\u003e0.15%Vol\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Check the supported input voltage before wiring so the module matches your controller and power source. Use the correct SDA and SCL pins on your controller and make sure the bus voltage is compatible. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/search-SEN0322.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0322\/\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Oxygen Sensor I2C Gravity by DFRobot\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this for logging or monitoring projects?\u003c\/strong\u003e Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45837767442721,"sku":"SEN0322","price":5666.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/oxygen-sensor-i2c-gravity-by-dfrobot-2204.jpg?v=1689741264"},{"product_id":"3-in-1-soil-instrument-gardening-soil-tester-hygrometer-measuring-ph-meter","title":"3-in-1 Soil Tester - pH\/Moisture\/Light Gardening Tool","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Chemical Conditions with a Sensor Made for Embedded Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003e3 in 1 Soil Instrument Gardening Soil Tester Hygrometer \/ Measuring PH Meter \/ Illuminance\u003c\/strong\u003e is a ph sensor designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eCategory:\u003c\/strong\u003e chemical sensors.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e water quality work, lab projects, and environmental monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3 in 1 Soil Instrument Gardening Soil Tester Hygrometer \/ Measuring PH Meter \/ Illuminance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/soil-moisture-sensor-analog-and-digital\"\u003eSoil Moisture Sensor Analog Digital\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor with analog and digital output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/ph-sensor-meter-analog-spear-tip-kit-for-soil-and-food-applications-gravity\"\u003epH Sensor Meter Analog Spear Tip Kit for Soil and Food Applications Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/sensors-soil-moisture-sensor-immersion-gold\"\u003eSoil Moisture Sensor Immersion Gold\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003esoil moisture sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003e3 in 1 Soil Instrument Gardening Soil Tester Hygrometer \/ Measuring PH Meter \/ Illuminance\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003echemical sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003e3 in 1 Soil Instrument Gardening Soil Tester Hygrometer \/ Measuring PH Meter \/ Illuminance\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × 3 in 1 Soil Instrument Gardening Soil Tester Hygrometer \/ Measuring PH Meter \/ Illuminance\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the 3 in 1 Soil Instrument Gardening Soil Tester Hygrometer \/ Measuring PH Meter \/ Illuminance measure?\u003c\/strong\u003e\n It is designed to measure light, reflection, or beam interruption.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45838144209185,"sku":"2080","price":145.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/3-in-1-Soil-Instrument-Gardening-Soil-Tester-Hygrometer-_-Measuring-PH-Meter-_-Illuminance-Philippines-_-Circuitrocks-edited.png?v=1755689852"},{"product_id":"adafruit-ens160-mox-gas-sensor-sciosense-ccs811-upgrade-stemma-qt-qwiic","title":"Adafruit ENS160 MOX Gas Sensor - CCS811 Upgrade, STEMMA QT","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAdafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic\u003c\/strong\u003e is a gas sensor with i2c designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eOutputs:\u003c\/strong\u003e TVOC, eCO2, AQI (IAQ outputs); \u003cstrong\u003eInterface:\u003c\/strong\u003e I2C (address 0x53, fixed); \u003cstrong\u003eBoard size:\u003c\/strong\u003e 25.4mm x 17.6mm x 4.5mm.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast wiring:\u003c\/strong\u003e Fast wiring with STEMMA QT \/ Qwiic JST-SH connectors\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e ENS160 MOX Gas Sensor\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e I2C (address 0x53, fixed)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 25.4mm x 17.6mm x 4.5mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-bme680-temperature-humidity-pressure-and-gas-sensor-stemma-qt\"\u003eAdafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eenvironmental sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic\"\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/air-quality-sensor-sgp30-breakout-voc-and-eco2-adafruit\"\u003eAir Quality Sensor SGP30 Breakout VOC and eCO2 Adafruit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eI2C interface, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus an \u003ca href=\"\/search?q=I2C+cable\"\u003eI2C cable\u003c\/a\u003e or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAdafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSensor\u003c\/th\u003e\n\u003ctd\u003eENS160 MOX Gas Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDo I need other sensors? Optional\u003c\/th\u003e\n\u003ctd\u003eadd a humidity sensor if you want temp\/RH compensation for better stability.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C (address 0x53, fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutputs\u003c\/th\u003e\n\u003ctd\u003eTVOC, eCO2, AQI (IAQ outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAir-quality outputs\u003c\/th\u003e\n\u003ctd\u003eTVOC, eCO2, AQI (great for trends \u0026amp; comparisons)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eBoard size\u003c\/th\u003e\n\u003ctd\u003e25.4mm x 17.6mm x 4.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e1.8g\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWarm-up\u003c\/th\u003e\n\u003ctd\u003e\u0026lt; 3 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect \u003cstrong\u003eVCC\u003c\/strong\u003e, \u003cstrong\u003eGND\u003c\/strong\u003e, \u003cstrong\u003eSDA\u003c\/strong\u003e, and \u003cstrong\u003eSCL\u003c\/strong\u003e to your controller. Use the correct board voltage and I2C address in your code. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Adafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Adafruit ENS160 MOX Gas Sensor - Sciosense CCS811 Upgrade - STEMMA QT \/ Qwiic measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this I2C sensor?\u003c\/strong\u003e\n This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":52215171055905,"sku":"5606","price":1850.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/5606-07.jpg?v=1768267727"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/collections\/Chemical.png?v=1776749521","url":"https:\/\/circuit.rocks\/collections\/chemical-sensors.oembed?page=4","provider":"circuitrocks","version":"1.0","type":"link"}