{"title":"Gas \u0026 Air Quality Sensors","description":"\u003cstyle\u003e\n  #crx-gas-sensors{\n    --crx-primary:#2E7D32;\n    --crx-primary-600:#1f6a2a;\n    --crx-primary-2:#4CAF50;\n    --crx-text:#0f172a;\n    --crx-muted:#475569;\n    --crx-border:#e5e7eb;\n    --crx-bg:#f7fbf8;\n    --crx-card:#ffffff;\n    --crx-soft:#ecfdf3;\n    --crx-warm:#fff7ed;\n    --crx-warm-border:#fed7aa;\n    --crx-shadow:0 10px 26px rgba(2,6,23,.08);\n    --crx-radius:18px;\n    font-size:18px;\n    line-height:1.75;\n    color:var(--crx-text);\n  }\n  #crx-gas-sensors .section + .section{margin-top:18px}\n  #crx-gas-sensors h2{font-size:1.85rem;line-height:1.2;margin:0 0 .7rem;letter-spacing:-.02em;}\n  #crx-gas-sensors h3{font-size:1.28rem;line-height:1.3;margin:0 0 .75rem;letter-spacing:-.01em;}\n  #crx-gas-sensors p{margin:.65rem 0;color:var(--crx-text)}\n  #crx-gas-sensors .muted{color:var(--crx-muted)}\n  #crx-gas-sensors 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.crx-specs{width:100%;min-width:700px;border-collapse:separate;border-spacing:0;border:1px solid var(--crx-border);border-radius:14px;overflow:hidden;font-size:1rem;background:#fff;}\n  #crx-gas-sensors .crx-specs th, #crx-gas-sensors .crx-specs td{padding:11px 13px;border-bottom:1px solid var(--crx-border);vertical-align:top;text-align:left;}\n  #crx-gas-sensors .crx-specs th{width:31%;background:#f8fafc;color:#0f172a;font-weight:700;}\n  #crx-gas-sensors .crx-specs tr:last-child th, #crx-gas-sensors .crx-specs tr:last-child td{border-bottom:none}\n  #crx-gas-sensors .faq{border:1px solid var(--crx-border);border-radius:18px;padding:18px;background:#ffffff;box-shadow:0 6px 18px rgba(2,6,23,.04);}\n  #crx-gas-sensors .faq h3{margin-top:0}\n  #crx-gas-sensors .faq-list{list-style:none;padding:0;margin:.35rem 0 0;}\n  #crx-gas-sensors .faq-list li{margin:12px 0 0;padding:12px 14px;border:1px solid #edf0f2;border-radius:14px;background:#fbfcfd;}\n  #crx-gas-sensors .faq-q{font-weight:800;display:block;margin-bottom:5px;color:var(--crx-text);}\n  #crx-gas-sensors .faq-a{color:var(--crx-muted)}\n  #crx-gas-sensors .crx-footer-links{margin-top:14px;padding-top:14px;border-top:1px solid var(--crx-border);}\n\u003c\/style\u003e\n\n\u003cdiv id=\"crx-gas-sensors\" class=\"product-copy\"\u003e\n  \u003csection class=\"crx-hero\"\u003e\n    \u003cdiv class=\"crx-hero-copy\"\u003e\n      \u003cspan class=\"crx-kicker\"\u003eGas \u0026amp; Air Quality Sensors at Circuitrocks\u003c\/span\u003e\n      \u003ch2\u003eSense gases, smoke, VOCs, and air quality in smart monitoring projects\u003c\/h2\u003e\n      \u003cp class=\"muted\"\u003eShop gas and air quality sensors for environmental monitoring, safety projects, ventilation studies, and IoT builds. This collection supports projects that track smoke, air quality trends, gas presence, and indoor environment changes.\u003c\/p\u003e\n\n      \u003cdiv class=\"crx-badges\"\u003e\n        \u003cspan class=\"crx-badge\"\u003eAir quality focused\u003c\/span\u003e\n        \u003cspan class=\"crx-badge\"\u003eIoT-ready\u003c\/span\u003e\n        \u003cspan class=\"crx-badge\"\u003eSafety project fit\u003c\/span\u003e\n        \u003cspan class=\"crx-badge\"\u003eMonitoring-friendly\u003c\/span\u003e\n        \u003cspan class=\"crx-badge\"\u003ePH-ready shipping\u003c\/span\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"crx-links\"\u003e\n        \u003ca class=\"crx-linkchip\" href=\"\/collections\/gas-sensors\"\u003eShop Gas Sensors\u003c\/a\u003e\n        \u003ca class=\"crx-linkchip\" href=\"\/collections\/sensors\"\u003eAll Sensors\u003c\/a\u003e\n        \u003ca class=\"crx-linkchip\" href=\"\/collections\/chemical-sensors\"\u003eChemical Sensors\u003c\/a\u003e\n        \u003ca class=\"crx-linkchip\" href=\"\/collections\/internet-of-things\"\u003eInternet of Things\u003c\/a\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003cp\u003eGas and air quality sensors help projects respond to the spaces people live and work in. Whether you are building an indoor air monitor, a lab demo, a ventilation study, or a safety-focused prototype, this collection gives you useful sensing options for detecting air changes and trend data over time.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003eWhy makers use gas and air quality sensors\u003c\/h3\u003e\n    \u003cdiv class=\"crx-grid cols-3\"\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cstrong\u003eUseful for real-world monitoring\u003c\/strong\u003e\n        \u003cp class=\"muted\"\u003eA strong fit for indoor environment projects, alerts, and trend tracking.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cstrong\u003eGood for connected systems\u003c\/strong\u003e\n        \u003cp class=\"muted\"\u003ePairs well with displays, data logging, and IoT dashboards.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cstrong\u003eHelpful in STEM and research work\u003c\/strong\u003e\n        \u003cp class=\"muted\"\u003eUseful for demos, experiments, and thesis or capstone builds.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n    \u003cdiv class=\"crx-grid cols-2\"\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cul\u003e\n          \u003cli\u003eIndoor air quality monitors and dashboard displays\u003c\/li\u003e\n          \u003cli\u003eVentilation studies for rooms, labs, and equipment enclosures\u003c\/li\u003e\n          \u003cli\u003eGas presence alerts and warning prototypes\u003c\/li\u003e\n          \u003cli\u003ePortable data loggers for environment tracking\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cul\u003e\n          \u003cli\u003eIoT nodes that send air quality data to the cloud\u003c\/li\u003e\n          \u003cli\u003eSchool and thesis projects around sensing and health spaces\u003c\/li\u003e\n          \u003cli\u003eSmart fans or ventilation control experiments\u003c\/li\u003e\n          \u003cli\u003eMulti-sensor stations that combine air, temperature, and humidity\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003eStarter bundle ideas\u003c\/h3\u003e\n    \u003cdiv class=\"crx-grid cols-3\"\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cstrong\u003eAir Monitor Starter Kit\u003c\/strong\u003e\n        \u003cp class=\"muted\"\u003eA clean starting point for sensor reading, display output, and data logging.\u003c\/p\u003e\n        \u003cp\u003e\u003ca href=\"\/collections\/microcontroller\"\u003eMicrocontrollers\u003c\/a\u003e · \u003ca href=\"\/collections\/displays\"\u003eDisplays\u003c\/a\u003e · \u003ca href=\"\/collections\/sd-storage\"\u003eSD storage\u003c\/a\u003e\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cstrong\u003eIoT Air Node\u003c\/strong\u003e\n        \u003cp class=\"muted\"\u003eA connected setup for remote air quality monitoring and dashboards.\u003c\/p\u003e\n        \u003cp\u003e\u003ca href=\"\/collections\/internet-of-things\"\u003eInternet of Things\u003c\/a\u003e · \u003ca href=\"\/collections\/wifi-ethernet\"\u003eWiFi \u0026amp; Ethernet\u003c\/a\u003e · \u003ca href=\"\/collections\/battery\"\u003eBattery\u003c\/a\u003e\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cstrong\u003eLab Demo Bundle\u003c\/strong\u003e\n        \u003cp class=\"muted\"\u003eUseful for school, training, and controlled environment experiments.\u003c\/p\u003e\n        \u003cp\u003e\u003ca href=\"\/collections\/sensors\"\u003eSensors\u003c\/a\u003e · \u003ca href=\"\/collections\/thermal-heat-temperature-sensors\"\u003eTemperature sensors\u003c\/a\u003e · \u003ca href=\"\/collections\/prototyping\"\u003ePrototyping\u003c\/a\u003e\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n    \u003cdiv class=\"crx-grid cols-2\"\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/microcontroller\"\u003eMicrocontrollers\u003c\/a\u003e for reading, calibration, and alerts\u003c\/li\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/displays\"\u003eDisplays\u003c\/a\u003e for live readings and status output\u003c\/li\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/internet-of-things\"\u003eInternet of Things\u003c\/a\u003e parts for remote monitoring\u003c\/li\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/sd-storage\"\u003eSD storage\u003c\/a\u003e for trend logging and export\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"crx-card\"\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/thermal-heat-temperature-sensors\"\u003eTemperature sensors\u003c\/a\u003e for environment context\u003c\/li\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/sensors\"\u003eSensors\u003c\/a\u003e for broader station builds\u003c\/li\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/enclosures-project-boxes\"\u003eEnclosures\u003c\/a\u003e for cleaner installations\u003c\/li\u003e\n          \u003cli\u003e\n\u003ca href=\"\/collections\/tools\"\u003eTools\u003c\/a\u003e for setup and bench checks\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n    \u003cdiv class=\"crx-specs-wrap\"\u003e\n      \u003ctable class=\"crx-specs\" role=\"table\" aria-label=\"Gas \u0026amp; Air Quality Sensors collection specs\"\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n            \u003cth\u003eTypical measurements\u003c\/th\u003e\n            \u003ctd\u003eGas presence, smoke-related response, VOC trends, or air quality indicators depending on the sensor\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eCommon outputs\u003c\/th\u003e\n            \u003ctd\u003eAnalog, digital, I2C, UART, or module-specific interfaces depending on the item\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eTypical platforms\u003c\/th\u003e\n            \u003ctd\u003eArduino, ESP32, Raspberry Pi, RP2040, and IoT-oriented boards\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eUse considerations\u003c\/th\u003e\n            \u003ctd\u003eWarm-up, calibration, airflow, and placement can affect results\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eBest for\u003c\/th\u003e\n            \u003ctd\u003eMonitoring, alerts, trend tracking, lab demos, and connected air projects\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003cth\u003eGood practice\u003c\/th\u003e\n            \u003ctd\u003eTreat readings as part of a full system design and validate in the target environment\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003ePlacement and calibration notes\u003c\/h3\u003e\n    \u003cdiv class=\"crx-note\"\u003e\n      \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e air sensors can behave differently based on airflow, warm-up time, and the space around them.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003ePlace sensors where air can move naturally and avoid blocking the sensing area.\u003c\/li\u003e\n        \u003cli\u003eAllow warm-up time if the sensor type requires it.\u003c\/li\u003e\n        \u003cli\u003eFor decision-making projects, test and calibrate under the same conditions where the system will run.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"crx-section section\"\u003e\n    \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n    \u003cp class=\"muted\"\u003eInclusions depend on the listing. Some products are bare sensors or breakouts, while others are ready-made modules. Check power needs, interface type, and calibration guidance before ordering.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"section faq\"\u003e\n    \u003ch3\u003eFAQ\u003c\/h3\u003e\n    \u003cul class=\"faq-list\"\u003e\n      \u003cli\u003e\n        \u003cspan class=\"faq-q\"\u003eCan I use these for indoor air quality projects?\u003c\/span\u003e\n        \u003cdiv class=\"faq-a\"\u003eYes. Many makers use them for room monitoring, dashboards, and connected alerts.\u003c\/div\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"faq-q\"\u003eDo gas sensors need calibration?\u003c\/span\u003e\n        \u003cdiv class=\"faq-a\"\u003eOften, yes. Calibration and placement can affect how useful the readings are.\u003c\/div\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"faq-q\"\u003eAre these good for IoT builds?\u003c\/span\u003e\n        \u003cdiv class=\"faq-a\"\u003eYes. They pair well with wireless boards, displays, and data logging systems.\u003c\/div\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"faq-q\"\u003eCan one sensor detect every gas?\u003c\/span\u003e\n        \u003cdiv class=\"faq-a\"\u003eNo. Different sensors respond to different targets or general air quality trends.\u003c\/div\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003cspan class=\"faq-q\"\u003eDo you ship within the Philippines?\u003c\/span\u003e\n        \u003cdiv class=\"faq-a\"\u003eYes. Circuitrocks ships nationwide across the Philippines.\u003c\/div\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003cdiv class=\"crx-footer-links muted\"\u003e\n    Explore related collections:\n    \u003ca href=\"\/collections\/sensors\"\u003eSensors\u003c\/a\u003e, \u003ca href=\"\/collections\/chemical-sensors\"\u003eChemical Sensors\u003c\/a\u003e, \u003ca href=\"\/collections\/internet-of-things\"\u003eInternet of Things\u003c\/a\u003e, \u003ca href=\"\/collections\/displays\"\u003eDisplays\u003c\/a\u003e, \u003ca href=\"\/collections\/microcontroller\"\u003eMicrocontrollers\u003c\/a\u003e.\n  \u003c\/div\u003e\n\n  \u003chr style=\"border:none;border-top:1px solid #e5e7eb;margin:18px 0;\"\u003e\n\u003c\/div\u003e","products":[{"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":"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":"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":"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":"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":"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":"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":"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":"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":"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":"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"},{"product_id":"adafruit-bme680-temperature-humidity-pressure-and-gas-sensor-stemma-qt","title":"Adafruit BME680 Temperature\/Humidity\/Pressure\/Gas Sensor - 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\u003eMeasure Temperature with a Sensor Made for Embedded Builds\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAdafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\u003c\/strong\u003e is an environmental 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 or SPI; \u003cstrong\u003eHumidity accuracy:\u003c\/strong\u003e ±3%.\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\u003eGreat:\u003c\/strong\u003e Great for altitude estimates (pressure-based)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e Weather station (temperature\/humidity\/pressure logging)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Bosch BME680\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e I2C or SPI\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExpected accuracy:\u003c\/strong\u003e ±3%\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\u003eAdafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eenvironmental 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-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 \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-mics5524-co-alcohol-and-voc-gas-sensor-breakout\"\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor\u003c\/td\u003e\n\u003ctd\u003egas detection, breakout-board 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 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 BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSensor\u003c\/th\u003e\n\u003ctd\u003eBosch BME680\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eBest practice\u003c\/th\u003e\n\u003ctd\u003eallow warm-up time for stable VOC trend readings\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eI2C or SPI\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eHumidity accuracy\u003c\/th\u003e\n\u003ctd\u003e±3%\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePressure accuracy\u003c\/th\u003e\n\u003ctd\u003e±1 hPa absolute\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTemperature accuracy\u003c\/th\u003e\n\u003ctd\u003e±1.0°C\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eI2C\u003c\/th\u003e\n\u003ctd\u003euse SDA\/SCL + power and ground (fastest setup with STEMMA QT)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSPI\u003c\/th\u003e\n\u003ctd\u003euse SCK\/MOSI\/MISO\/CS when you prefer SPI wiring\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 BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT\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 BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT 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":"Adafruit","offers":[{"title":"Default Title","offer_id":52215266443553,"sku":"3660","price":1598.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/3660-08.jpg?v=1768268709"},{"product_id":"enviro-for-raspberry-pi-enviro-air-quality","title":"Pimoroni Enviro + Air Quality HAT for Raspberry Pi","description":"\u003cstyle\u003e\n\/* Comfortable reading rhythm for the product page *\/\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,.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\u003c\/style\u003e\n\n\u003cdiv class=\"product-copy\"\u003e\n \u003cp\u003e\u003cstrong\u003eEnviro for Raspberry Pi - Enviro + Air Quality\u003c\/strong\u003e is a \u003cstrong\u003eRaspberry Pi environmental and air quality board\u003c\/strong\u003e that combines environment-focused sensing with air quality monitoring for Raspberry Pi dashboards, room monitoring systems, educational setups, and connected environmental projects. It is a solid choice for makers, educators, and developers who want a more integrated and professional-looking build using \u003ca href=\"\/collections\/pimoroni\"\u003ePimoroni\u003c\/a\u003e hardware and compatible \u003ca href=\"\/collections\/raspberry-pi\"\u003eRaspberry Pi\u003c\/a\u003e or microcontroller platforms where applicable.\u003c\/p\u003e\n\n \u003ch2\u003eWhy choose this product\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMore complete environmental picture:\u003c\/strong\u003e Helpful for projects that want both general environmental data and air quality awareness.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCleaner integration:\u003c\/strong\u003e Easier to work with than wiring several separate modules together.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIdeal for dashboards:\u003c\/strong\u003e Great for visual monitoring, logging, and room-condition projects.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eWhat you can build\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eAir-aware dashboards:\u003c\/strong\u003e display both environmental and air quality trends in one Raspberry Pi setup.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRoom monitoring systems:\u003c\/strong\u003e build a more capable environmental station for indoor spaces.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEducational demos:\u003c\/strong\u003e compare multiple sensor trends in a single project.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eRecommended add-ons\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/raspberry-pi\"\u003eRaspberry Pi boards\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/displays\"\u003eDisplays\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/power-supplies\"\u003ePower supplies\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"\/collections\/cases-for-raspberry-pi\"\u003eCases and mounts\u003c\/a\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eTechnical overview\u003c\/h2\u003e\n \u003ctable\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnvironmental + air quality add-on\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlatform\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRaspberry Pi\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnvironmental and air quality monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProject fit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDashboards, room monitors, educational builds\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegration style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMulti-sensor add-on board\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\n \u003ch2\u003eSetup \u0026amp; build tips\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor placement:\u003c\/strong\u003e Put the board where it can sample the surrounding environment effectively.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAirflow awareness:\u003c\/strong\u003e Avoid blocking air movement if your project relies on air quality readings.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDisplay pairing:\u003c\/strong\u003e A local screen or web dashboard makes trend monitoring easier.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch2\u003eWhat’s in the box\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eEnviro + Air Quality board\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003cdiv class=\"faq-list\"\u003e\n \u003ch3\u003eFAQs\u003c\/h3\u003e\n \u003cdetails class=\"faq\"\u003e\n \u003csummary\u003eWhy choose this version?\u003c\/summary\u003e\n \u003cdiv\u003eIt is a better fit when your project needs both environmental sensing and air quality awareness.\u003c\/div\u003e\n \u003c\/details\u003e\n \u003cdetails class=\"faq\"\u003e\n \u003csummary\u003eWhat can I build with it?\u003c\/summary\u003e\n \u003cdiv\u003eIt works well for room monitoring dashboards, data loggers, and educational sensor setups.\u003c\/div\u003e\n \u003c\/details\u003e\n \u003cdetails class=\"faq\"\u003e\n \u003csummary\u003eDoes it need a Raspberry Pi?\u003c\/summary\u003e\n \u003cdiv\u003eYes. It is a Raspberry Pi add-on board.\u003c\/div\u003e\n \u003c\/details\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pimoroni","offers":[{"title":"Default Title","offer_id":52436847001889,"sku":"PIM458","price":5518.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/enviro-plus-shop-1_6698f75b-6403-42de-85fa-b1af5eb218a6.jpg?v=1773316667"},{"product_id":"adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic","title":"Adafruit SGP40 Air Quality VOC Sensor - STEMMA QT\/Qwiic","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 .product-copy .faq-list{margin:1.2rem 0 1.4rem}\n .product-copy .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .product-copy .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eBuild a Smarter Indoor Air Quality Monitor with the SGP40\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/strong\u003e is a compact digital gas sensor breakout made for\n \u003cstrong\u003eindoor air quality monitoring\u003c\/strong\u003e. If you want to track changes in air freshness, detect VOC trends, or build a “digital nose” for your project,\n this board makes it much easier than working with raw analog gas sensors.\n \u003c\/p\u003e\n\n \u003cp\u003e\n At the heart of the breakout is the \u003cstrong\u003eSensirion SGP40\u003c\/strong\u003e, a fully integrated \u003cstrong\u003eMOX gas sensor\u003c\/strong\u003e with onboard control electronics.\n Instead of managing a heater and reading analog values yourself, you communicate over \u003cstrong\u003eI2C\u003c\/strong\u003e and process the sensor data into a\n useful \u003cstrong\u003eVOC index\u003c\/strong\u003e for dashboards, warning systems, and environmental logging.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e The SGP40 does \u003cstrong\u003enot\u003c\/strong\u003e directly output TVOC or eCO2 readings like the SGP30. Instead, its raw readings are\n processed using Sensirion’s algorithm to generate an overall \u003cstrong\u003eVOC Index from 0 to 500\u003c\/strong\u003e.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndoor air quality focused:\u003c\/strong\u003e Great for tracking VOC trends in enclosed spaces\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDigital I2C interface:\u003c\/strong\u003e Easier to use than raw analog MOX gas sensors\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVOC index output:\u003c\/strong\u003e Convert sensor data into a more practical air-quality style reading\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDetects VOCs and H₂:\u003c\/strong\u003e Useful for general indoor air-quality trend monitoring\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHumidity compensation support:\u003c\/strong\u003e Can improve readings when paired with an external humidity sensor\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSTEMMA QT \/ Qwiic ready:\u003c\/strong\u003e Fast solderless I2C connections for prototypes and sensor chains\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3.3V and 5V friendly:\u003c\/strong\u003e Onboard regulator and level shifting simplify integration\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This breakout is ideal for room air quality monitors, office or classroom environmental sensors, smart home dashboards, HVAC trend tracking,\n indoor ventilation monitors, desktop air-quality displays, and data logging projects that watch changes in VOC levels over time.\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=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e,\n \u003ca href=\"\/search?q=feather\"\u003eAdafruit Feather\u003c\/a\u003e, or another I2C-capable controller, plus a\n \u003ca href=\"\/search?q=STEMMA+QT+cable\"\u003eSTEMMA QT cable\u003c\/a\u003e for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n For better compensated readings and a more complete environmental monitor, pair it with a\n \u003ca href=\"\/search?q=humidity+sensor\"\u003ehumidity sensor\u003c\/a\u003e, \u003ca href=\"\/search?q=temperature+sensor\"\u003etemperature sensor\u003c\/a\u003e,\n OLED display, data logger, or wireless microcontroller board.\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\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMain Sensor\u003c\/th\u003e\n \u003ctd\u003eSensirion SGP40 multi-pixel MOX gas sensor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eI2C digital interface\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTarget Gases\u003c\/th\u003e\n \u003ctd\u003eBroad range of VOCs and H₂ for indoor air quality trend monitoring\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Style\u003c\/th\u003e\n \u003ctd\u003eRaw sensor reading processed with software into a VOC Index from 0 to 500\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eClock Stretching\u003c\/th\u003e\n \u003ctd\u003eNot required\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eHumidity Compensation\u003c\/th\u003e\n \u003ctd\u003eSupported with an external humidity sensor over I2C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePower Compatibility\u003c\/th\u003e\n \u003ctd\u003eWorks with 3.3V and 5V systems using onboard regulator and level shifting\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eConnectors\u003c\/th\u003e\n \u003ctd\u003eDual STEMMA QT \/ Qwiic-compatible JST SH I2C connectors\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePin Access\u003c\/th\u003e\n \u003ctd\u003ePins are also broken out to standard headers\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBest Use\u003c\/th\u003e\n \u003ctd\u003eIndoor air quality monitoring, environmental trend tracking, digital nose projects\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 breakout communicates over \u003cstrong\u003eI2C\u003c\/strong\u003e, making it easy to use with common development boards and single-board computers.\n Since it is a digital sensor with onboard control, you do not need to manage the heater or interpret raw analog voltages the way you would with simpler gas sensors.\n \u003c\/p\u003e\n\n \u003cp\u003e\n For best results, treat this as a \u003cstrong\u003etrend sensor\u003c\/strong\u003e rather than a lab instrument. Like other gas sensors, readings can vary from unit to unit,\n so calibration against known conditions is recommended if you need tighter comparisons or more repeatable thresholds.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Adafruit SGP40 Air Quality Sensor Breakout\n \u003c\/p\u003e\n \u003cp\u003e\n \u003cstrong\u003eNote:\u003c\/strong\u003e STEMMA QT cable is not included.\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\u003eDoes this measure CO2?\u003c\/strong\u003e\n Not directly. This board is focused on VOC-based indoor air quality monitoring and does not output true CO2 measurements.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it output TVOC and eCO2 like the SGP30?\u003c\/strong\u003e\n No. The SGP40 is processed into a VOC Index rather than direct TVOC\/eCO2 values.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this with Arduino or Raspberry Pi?\u003c\/strong\u003e\n Yes. It works over I2C and Adafruit provides software support for Arduino, CircuitPython, and Linux-capable systems like Raspberry Pi.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDo I need a humidity sensor?\u003c\/strong\u003e\n Not strictly, but adding one allows humidity compensation, which can improve measurement stability.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs the STEMMA QT cable included?\u003c\/strong\u003e\n No. The board has STEMMA QT \/ Qwiic connectors, but the cable is sold separately.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":52441062211873,"sku":"4829","price":1256.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/4829-06.jpg?v=1773399039"},{"product_id":"atlas-scientific-ezo-co2-research-grade-co2-sensor","title":"Atlas Scientific EZO-CO2 Research Grade CO2 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\u003eAtlas Scientific EZO-CO2™ Research Grade CO2 Sensor for Embedded Sensing\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eEZO-CO2™ Research Grade CO2 Sensor\u003c\/strong\u003e from Atlas Scientific is built for greenhouse control, indoor air projects, and embedded CO2 monitoring. It works well in embedded projects, lab setups, and custom monitoring systems where reliable sensing hardware matters.\n \u003c\/p\u003e\n\n \u003cp\u003e\n This product fits well in projects centered on \u003cstrong\u003egreenhouse control, indoor air projects, and embedded CO2 monitoring\u003c\/strong\u003e. It is especially useful for builders who want a cleaner path from idea to working prototype using Atlas Scientific hardware.\n \u003c\/p\u003e\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImport note:\u003c\/strong\u003e Certificate of calibration not included.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eAtlas Scientific quality and ecosystem fit\u003c\/li\u003e\n \u003cli\u003eEasy to pair with common maker and lab platforms\u003c\/li\u003e\n \u003cli\u003eUseful for prototypes and long-term projects\u003c\/li\u003e\n \u003cli\u003eWell suited for sensing-focused builds\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n Use it in hydroponics and aquaponics projects, lab instruments, data loggers, environmental monitors, smart dosing systems, greenhouse builds, maintenance rigs, and other systems that depend on dependable CO2 hardware.\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 depending on your controller plan. You can also browse the \u003ca href=\"\/collections\/atlas-scientific\"\u003eAtlas Scientific collection\u003c\/a\u003e for matching probes, circuits, kits, and accessories.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Helpful add-ons include \u003ca href=\"\/search?q=atlas+scientific+calibration\"\u003ecalibration solutions\u003c\/a\u003e, \u003ca href=\"\/search?q=atlas+scientific+bnc\"\u003eBNC accessories\u003c\/a\u003e, \u003ca href=\"\/search?q=atlas+scientific+isolator\"\u003eisolators\u003c\/a\u003e, carrier boards, enclosures, and data-logging hardware to round out a full sensing build.\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\u003eEZO-CO2™ Research Grade CO2 Sensor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eEZO-CO2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct family\u003c\/th\u003e\n \u003ctd\u003eSensor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePrimary use\u003c\/th\u003e\n \u003ctd\u003eCo2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eVariant in this import\u003c\/th\u003e\n \u003ctd\u003eNo calibration certificate\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBuild role\u003c\/th\u003e\n \u003ctd\u003eAtlas Scientific sensing hardware or accessory\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTypical pairing\u003c\/th\u003e\n \u003ctd\u003eEmbedded project or lab monitoring setup\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 official Atlas Scientific product page and datasheet for the detailed wiring and setup notes that match your exact hardware configuration.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × EZO-CO2™ Research Grade CO2 Sensor\u003cbr\u003e\u003cstrong\u003eImport note:\u003c\/strong\u003e Certificate of calibration not included\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 with Arduino or ESP32?\u003c\/strong\u003e\u003cbr\u003eYes, Atlas Scientific parts are commonly used in embedded projects when paired with the right supporting hardware.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this meant for lab or field projects?\u003c\/strong\u003e\u003cbr\u003eIt can fit either, depending on how your final system is designed and protected.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDo I need other Atlas parts too?\u003c\/strong\u003e\u003cbr\u003eIn many cases, yes. Probes, circuits, kits, isolators, and calibration items are often used together.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere do I check wiring and limits?\u003c\/strong\u003e\u003cbr\u003eUse the official Atlas Scientific datasheet and product page for the exact setup details.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Atlas Scientific","offers":[{"title":"Default Title","offer_id":52523004756257,"sku":"EZO-CO2","price":22592.85,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/atlas-scientific-ezo-co2-research-grade-co2-sensor-white.jpg?v=1778911442"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/collections\/gas-sensors.png?v=1776414495","url":"https:\/\/circuit.rocks\/collections\/gas-sensors.oembed","provider":"circuitrocks","version":"1.0","type":"link"}