{"product_id":"mq-2-mq-3-mq-7-mq-135-detection-smoke-methane-liquefied-gas-sensor-module-for-starter-diy-kit","title":"MQ-Series Gas Sensor Modules: MQ-2, MQ-3, MQ-7 or MQ-135","description":"\u003cp\u003eExplore gas-sensing inputs in a microcontroller project with an MQ-series sensor module. This listing offers MQ-2, MQ-3, MQ-7 and MQ-135 variants, each intended for different sensing applications.\u003c\/p\u003e\u003ch2\u003eMatch the sensor variant to your prototype\u003c\/h2\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ ✅ Select the sensor for the target gas — the model choice matters; MQ-2 is described for smoke and the variants are not interchangeable.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ ✅ Connect a sensor output to your circuit — the module provides an analogue output as listed.\u003c\/p\u003e\u003cp style=\"margin:0 0 6px 0\"\u003e✅ ✅ Choose only the model you need — the selected variant is one sensor module.\u003c\/p\u003e\u003cul\u003e\n\n\n\n\u003c\/ul\u003e\u003cp\u003eUse the module for experimentation or a prototype gas-monitoring circuit. The MQ-2 specification lists a 5V heater supply and a stated detection range of 300–10,000 ppm for its listed target; those figures should not be applied to the other MQ variants.\u003c\/p\u003e\u003cp\u003eThis is a development sensor module, not a certified safety alarm. Sensor response depends on calibration, warm-up and operating conditions. Confirm the chosen sensor’s datasheet and circuit requirements before relying on readings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e MQ-2, MQ-3, MQ-7 or MQ-135 option; analogue output; MQ-2 heater supply listed as 5V. Detection characteristics depend on the selected model.\u003c\/p\u003e\u003cp\u003eChoose the sensor variant that matches your project requirements.\u003c\/p\u003e","brand":"Spy-shop.com","offers":[{"title":"MQ-135","offer_id":64042566549834,"sku":"1005012176992683-MQ-135","price":18.13,"currency_code":"EUR","in_stock":true},{"title":"MQ-7","offer_id":64042566582602,"sku":"1005012176992683-MQ-7","price":18.13,"currency_code":"EUR","in_stock":true},{"title":"MQ-3","offer_id":64042566615370,"sku":"1005012176992683-MQ-3","price":19.71,"currency_code":"EUR","in_stock":true},{"title":"MQ-2","offer_id":64042566648138,"sku":"1005012176992683-MQ-2","price":18.13,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/5980\/2954\/files\/He1c096a95f8b43cc95eaf821dad2e697Q.webp?v=1792605958","url":"https:\/\/spy-shop.com\/products\/mq-2-mq-3-mq-7-mq-135-detection-smoke-methane-liquefied-gas-sensor-module-for-starter-diy-kit","provider":"Spy-shop.com","version":"1.0","type":"link"}