{"title":"Air \u0026 Gas Sensors","description":"\u003ch2\u003eAir Quality and Gas Sensors for IoT Projects\u003c\/h2\u003e\u003cp\u003eAir quality, particulate matter, VOC, CO2, and combustible-gas sensors for monitoring, safety, and environmental data logging. Covers indoor air quality (IAQ) and basic detection use cases.\u003c\/p\u003e\u003cp\u003eI2C, UART, and analog interfaces. Compatible with ESP32, Arduino, and Raspberry Pi.\u003c\/p\u003e\u003ch2\u003e\/\/ frequently asked\u003c\/h2\u003e\u003cdiv class=\"faq-list\"\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eQ: Which sensor for indoor air quality (IAQ)?\u003c\/strong\u003eMulti-gas I2C sensors that report VOC, CO2-equivalent, and humidity work best. They self-calibrate over time and run on low power for battery use.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eQ: Do I need to calibrate gas sensors?\u003c\/strong\u003eMost need a warm-up period of 24–48 hours on first power-up. Specialized industrial sensors require calibration in a known-clean environment.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eQ: Will this ship from Manila?\u003c\/strong\u003eYes — same-day 4 PM cutoff weekdays.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eQ: Are these accurate enough for safety monitoring?\u003c\/strong\u003eHobby-grade gas sensors are good for trend monitoring and early warning. For life-safety applications (CO detection, industrial), use a certified detector.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eQ: What's your return policy?\u003c\/strong\u003e7-day DOA window. Replacement or refund.\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eQ: Do you offer technical support?\u003c\/strong\u003eYes — forum and email. Weekday and weekend response.\u003c\/div\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-co2-analog-sensor-gravity","title":"DFRobot Gravity MG811 Analog CO2 Gas Sensor","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable Gas Carbon Dioxide CO2 Analog Sensor Gravity Sensing to Your Next Build\u003c\/h2\u003e\n\n \u003cp\u003e\n Gas CO2 Analog Sensor Gravity. \"Greenhouse Effect\" is melting the Earth ice core every minute and creating dangerous icebergs. By knowing the exact concentration of CO2, we can do something to reduce the CO2 and to protect our Earth. For that reason, this CO2 sensor is designed by DFRobot engineer. This is the first CO2 sensor in Arduino market. The output voltage of the module falls as the concentration of the CO2 increases. The potentiometer onboard is designed to set the threshold of voltage. As long as the CO2 concentration is high enough (voltage is lower than threshold), a digital signal (ON\/OFF) will be released.\n \u003c\/p\u003e\n\n \u003cp\u003e\n It has MG-811 sensor module onboard which is highly sensitive to CO2 and less sensitive to alcohol and CO, low humidity \u0026amp; temperature dependency.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eAir Quality Control\u003c\/li\u003e\n \u003cli\u003eFerment Process Control\u003c\/li\u003e\n \u003cli\u003eRoom Temperature CO2 concentration Detection\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating voltage:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e Gravity Analog\u003c\/li\u003e\n \u003cli\u003eOne digital output\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the gas carbon dioxide co2 analog sensor gravity.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n Pair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus sensor cables, headers, or a matching expansion shield for faster setup.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eGas Carbon Dioxide CO2 Analog Sensor Gravity\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eSEN0159\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eAnalog, Digital\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating voltage\u003c\/th\u003e\n \u003ctd\u003e5V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDimensions\u003c\/th\u003e\n \u003ctd\u003e32x42mm (1.26x1.65\")\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/search-SEN0159.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"http:\/\/www.dfrobot.com\/wiki\/index.php\/CO2_Sensor_SKU:SEN0159\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/SEN0159\/CO2%20Sensor%20V1%20SCH.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSchematic\u003c\/a\u003e · \u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/SEN0159\/CO2%20Sensor%20V1%20Layout.pdf\" target=\"_blank\" rel=\"noopener\"\u003eLayout\u003c\/a\u003e · \u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/SEN0159\/CO2b%20MG811%20datasheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMG811 datasheet\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Gas Carbon Dioxide CO2 Analog Sensor Gravity\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use this for logging or monitoring projects?\u003c\/strong\u003e Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812651950369,"sku":"SEN0159","price":3265.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-carbon-dioxide-co2-analog-sensor-gravity-a36355.jpg?v=1689658284"},{"product_id":"gas-co-combustible-analog-sensor-mq9-for-arduino-gravity","title":"DFRobot Gravity MQ9 CO\/Combustible Gas Sensor - SEN0134","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 36.4x26.6mm(1.43\"x1.05\").\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e High sensitivity to Methane, Propane and CO\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGravity Analog Cable x1:\u003c\/strong\u003e Gravity Analog Cable x1\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Semiconductor\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 36.4x26.6mm(1.43\"x1.05\")\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSensor Type\u003c\/th\u003e\n\u003ctd\u003eSemiconductor\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e36.4x26.6mm(1.43\"x1.05\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas CO Combustible Analog Sensor MQ9 For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812681212193,"sku":"SEN0134","price":439.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity-730.jpg?v=1689658781"},{"product_id":"hydrogen-gas-analog-sensor-mq8-for-arduino-gravity","title":"DFRobot MQ-8 Hydrogen Gas Sensor Gravity - SEN0133","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\").\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh sensitivity to Hydrogen (H2):\u003c\/strong\u003e High sensitivity to Hydrogen (H2)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\")\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 1-Output 2-GND 3-VCC\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity\"\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq6\"\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e40x20mm(1.57\"x0.79\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePin Definition\u003c\/th\u003e\n\u003ctd\u003e 1-Output 2-GND 3-VCC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Hydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Hydrogen Gas Analog Sensor MQ8 For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812682031393,"sku":"SEN0133","price":547.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity-731.jpg?v=1689658786"},{"product_id":"carbon-monoxide-analog-sensor-mq7-for-arduino-gravity","title":"MQ-7 Carbon Monoxide Gas Sensor - Analog Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\").\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh sensitivity to carbon monoxide:\u003c\/strong\u003e High sensitivity to carbon monoxide\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast response:\u003c\/strong\u003e Fast response\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 40x20mm(1.57\"x0.79\")\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq4\"\u003eGas Analog CH4 Gas Sensor MQ4 For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eadjustable sensing range, analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eCarbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e40x20mm(1.57\"x0.79\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Carbon Monoxide Analog Sensor MQ7 For Arduino\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Carbon Monoxide Analog Sensor MQ7 For Arduino measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812682129697,"sku":"AB074","price":105.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/carbon-monoxide-analog-sensor-mq7-for-arduino-732.jpg?v=1689658790"},{"product_id":"gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity","title":"DFRobot Gravity MQ2 Gas Sensor - SEN0127","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/strong\u003e is a gas sensor with analog output designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003ePower supply needs:\u003c\/strong\u003e 5V; \u003cstrong\u003eInterface type:\u003c\/strong\u003e Analog; \u003cstrong\u003eSize:\u003c\/strong\u003e 36.4x26.6mm (1.4x1'').\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e Easily recognitive interfaces of sensors (\"A\" for analog and \"D\" for digital)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh quality connector:\u003c\/strong\u003e High quality connector\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide detecting scope:\u003c\/strong\u003e Wide detecting scope\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 5V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 36.4x26.6mm (1.4x1'')\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/hydrogen-gas-analog-sensor-mq8-for-arduino-gravity\"\u003eHydrogen Gas Analog Sensor MQ8 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-co-combustible-analog-sensor-mq9-for-arduino-gravity\"\u003eGas CO Combustible Analog Sensor MQ9 For Arduino Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq6\"\u003eGas Sensor MQ6 Analog Propane For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eGas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface type\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower supply needs\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e36.4x26.6mm (1.4x1'')\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog and digital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eMany modules in this style expose both \u003cstrong\u003eanalog\u003c\/strong\u003e and \u003cstrong\u003edigital\u003c\/strong\u003e pins. Use the analog pin for raw readings and the digital pin for threshold-based switching, if available. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Gas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Gas LPG Butane Propane Methane Alcohol Sensor Analog MQ2 For Arduino Gravity measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog and digital sensor?\u003c\/strong\u003e\n This module may provide both analog and digital outputs, depending on how you wire and read it.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812682228001,"sku":"SEN0127","price":799.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/gas-lpg-butane-propane-methane-alcohol-sensor-analog-mq2-for-arduino-gravity-733.jpg?v=1689658795"},{"product_id":"adafruit-mics5524-co-alcohol-and-voc-gas-sensor-breakout","title":"Adafruit MiCS-5524 CO\/Alcohol\/VOC Gas Sensor Breakout","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Gas Changes with a Practical Air Sensor\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/strong\u003e is a gas sensor designed for air-quality projects, leak alerts, and ventilation monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 20.0mm x 12.7mm x 3.1mm \/ 0.8\" x 0.5\" x 0.1\"; \u003cstrong\u003eProduct Weight:\u003c\/strong\u003e 0.9g \/ 0.0oz; \u003cstrong\u003eCategory:\u003c\/strong\u003e gas sensors.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e air-quality projects, leak alerts, and ventilation monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/adafruit-sgp40-air-quality-sensor-breakout-voc-index-stemma-qt-qwiic\"\u003eAdafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT \/ Qwiic\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with I2C\u003c\/td\u003e\n\u003ctd\u003eSTEMMA QT connector, Qwiic connector\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq5\"\u003eGas Sensor MQ5 Analog LPG For Arduino\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/gas-sensor-mq135\"\u003eGas Sensor MQ135\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egas sensor with UART\u003c\/td\u003e\n\u003ctd\u003eanalog output, digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for gas leak alarms, indoor air monitors, safety demos, ventilation control, and science projects.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include fresh-air test setup, an enclosure with vents, and a display for local readout, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Dimensions\u003c\/th\u003e\n\u003ctd\u003e20.0mm x 12.7mm x 3.1mm \/ 0.8\" x 0.5\" x 0.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e0.9g \/ 0.0oz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003egas sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eAdafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor Breakout measure?\u003c\/strong\u003e\n It is designed to measure gas concentration changes in air.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812688093473,"sku":"3199","price":1256.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/adafruit-mics5524-co-alcohol-and-voc-gas-sensor-breakout-746.jpg?v=1689658861"},{"product_id":"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":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/air-quality-sensor-sgp30-breakout-voc-and-eco2-adafruit-1.jpg?v=1781007678"},{"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":true}],"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":"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":true}],"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/collections\/Air_Gas_Sensors.png?v=1781143135","url":"https:\/\/circuit.rocks\/collections\/sensors-air-gas.oembed","provider":"circuitrocks","version":"1.0","type":"link"}