{"product_id":"mq-series-kit-mq-2-mq-135-9-gas-sensor-modules-mq-2-mq-3-mq-4-mq-5-mq-6-mq-7-mq-8-mq-9","title":"MQ series kit MQ-2 MQ-135 9 gas sensor modules MQ-2 MQ-3 MQ-4  MQ-5 MQ-6 MQ-7 MQ-8 MQ-9","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMetal\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eHall Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ePressure Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\n\u003cp\u003eMQ series gas sensor kit contains 9 popular gas sensor modules: MQ‑2, MQ‑3, MQ‑4, MQ‑5, MQ‑6, MQ‑7, MQ‑8, MQ‑9, MQ‑135.\u003cbr\u003e\nThese are semiconductor gas sensors for detecting flammable gas, alcohol, methane, carbon monoxide, hydrogen, air quality and other harmful gas.\u003cbr\u003e\nEach module provides analog output and digital output, compatible with Arduino, ESP32, STM32, Raspberry Pi and other microcontrollers.\u003cbr\u003e\nIdeal for maker DIY projects, gas alarm systems and environmental monitoring.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat each sensor detects\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul style=\"list-style-type: disc;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑2\u003c\/strong\u003e: Smoke, LPG, propane, hydrogen, flammable gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑3\u003c\/strong\u003e: Alcohol vapor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑4\u003c\/strong\u003e: Methane, natural gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑5\u003c\/strong\u003e: Coal gas, liquefied gas, natural gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑6\u003c\/strong\u003e: LPG liquefied petroleum gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑7\u003c\/strong\u003e: Carbon monoxide (CO)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑8\u003c\/strong\u003e: Hydrogen gas (H₂)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑9\u003c\/strong\u003e: Carbon monoxide \u0026amp; combustible gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMQ‑135\u003c\/strong\u003e: Air quality, ammonia, benzene, harmful gas\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003cbr\u003e\n✅ Dual output: AO analog signal + DO digital switch signal. On‑board potentiometer to adjust trigger threshold.\u003cbr\u003e\n✅ DC 5V power supply, standard 4‑pin header for easy wiring.\u003cbr\u003e\n✅ On‑board power indicator and signal indicator LED.\u003cbr\u003e\n✅ Fast response \u0026amp; high sensitivity. \u003cstrong\u003eNote: Sensor needs pre‑heat about 2 minutes for stable reading.\u003c\/strong\u003e\u003cbr\u003e\n✅ Widely used for gas alarm device, environment monitoring, smart home, electronic maker experiments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul style=\"list-style-type: disc;\"\u003e\n\u003cli\u003eOperating Voltage: DC 5V\u003c\/li\u003e\n\u003cli\u003eOutput: Analog(AO) + Digital(DO)\u003c\/li\u003e\n\u003cli\u003ePin Definition: VCC, GND, AO, DO\u003c\/li\u003e\n\u003cli\u003ePre‑heat Time: ≥ 2 minutes\u003c\/li\u003e\n\u003cli\u003eCompatible With: Arduino, ESP32, STM32, Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: ‑10℃ ~ +50℃\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003col style=\"list-style-type: decimal;\"\u003e\n\u003cli\u003e9‑in‑1 MQ gas sensor module kit, covers smoke, alcohol, methane, CO, hydrogen, air quality detection.\u003c\/li\u003e\n\u003cli\u003eDual signal output: analog AO and digital DO, adjustable sensitivity via onboard potentiometer.\u003c\/li\u003e\n\u003cli\u003eDC 5V working voltage, standard 4‑pin interface, easy to connect with Arduino \/ ESP32 \/ Raspberry Pi.\u003c\/li\u003e\n\u003cli\u003eEquipped with power and signal LED indicators for status observation.\u003c\/li\u003e\n\u003cli\u003ePerfect for gas alarm DIY, environmental monitoring, electronic maker projects.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp style=\"text-align:left;margin:0;\"\u003e\u003cimg cke-id=\"img36\" referrerpolicy=\"no-referrer\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S03e85cda9661471ab3c9acdd460a587bD.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"Yoeruyo","offers":[{"title":"MQ-2","offer_id":55441275027755,"sku":"14:29#MQ-2","price":14.67,"currency_code":"USD","in_stock":false},{"title":"MQ-3","offer_id":55441275060523,"sku":"14:173#MQ-3","price":15.66,"currency_code":"USD","in_stock":false},{"title":"MQ-6","offer_id":55441275093291,"sku":"14:496#MQ-6","price":14.67,"currency_code":"USD","in_stock":false},{"title":"MQ-7","offer_id":55441275126059,"sku":"14:365458#MQ-7","price":15.35,"currency_code":"USD","in_stock":false},{"title":"MQ-4","offer_id":55441275158827,"sku":"14:175#MQ-4","price":14.67,"currency_code":"USD","in_stock":false},{"title":"MQ-5","offer_id":55441275191595,"sku":"14:10#MQ-5","price":14.67,"currency_code":"USD","in_stock":false},{"title":"MQ-135","offer_id":55441275224363,"sku":"14:193#MQ-135","price":15.53,"currency_code":"USD","in_stock":false},{"title":"9 styles bagged","offer_id":55441275257131,"sku":"14:366#9 styles bagged","price":87.48,"currency_code":"USD","in_stock":false},{"title":"MQ-8","offer_id":55441275289899,"sku":"14:100013777#MQ-8","price":14.67,"currency_code":"USD","in_stock":false},{"title":"MQ-9","offer_id":55441275322667,"sku":"14:200005536#MQ-9","price":15.35,"currency_code":"USD","in_stock":false},{"title":"9 styles box","offer_id":55441275355435,"sku":"14:1254#9 styles box","price":88.88,"currency_code":"USD","in_stock":false},{"title":"MQ PCB","offer_id":55441275388203,"sku":"14:200006154#MQ PCB","price":11.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sfc6226f19d214dda8c3bb4cbdf1879975.webp?v=1788751161","url":"https:\/\/yoeruyo.com\/products\/mq-series-kit-mq-2-mq-135-9-gas-sensor-modules-mq-2-mq-3-mq-4-mq-5-mq-6-mq-7-mq-8-mq-9","provider":"Yoeruyo","version":"1.0","type":"link"}