{"product_id":"mg996r-metal-gear-high-torque-servo-standard-size-rc-robotics-servo-copy","title":"2 Pack MQ‑2 Combustible Gas \u0026 Smoke Sensor Module – LPG, Methane, Hydrogen \u0026 Smoke Detection","description":"\u003ch1\u003e2 Pack MQ‑2 Combustible Gas \u0026amp; Smoke Sensor Module\u003c\/h1\u003e\n\u003ch2\u003eLPG, Methane, Hydrogen \u0026amp; Smoke Detection\u003c\/h2\u003e\n\u003cp\u003eVersatile MQ‑2 combustible gas and smoke sensor module for detecting LPG, methane, hydrogen, alcohol, and smoke, perfect for DIY leak alarms, safety monitors, and smart‑home ventilation projects.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eMQ‑2 Combustible Gas \u0026amp;amp; Smoke Sensor Module Compatibility \u003c\/h2\u003e\n\u003cp\u003eWorks with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and most 5V‑powered microcontroller platforms using the analog output and optional digital threshold output.\u003c\/p\u003e\n\u003ch2\u003eKey Features \u003c\/h2\u003e\n\u003cp\u003eDetects a wide range of combustible gases and fumes including LPG, propane, butane, methane, hydrogen, alcohol, carbon monoxide, and smoke, making it suitable for general leak and smoke detection.\u003c\/p\u003e\n\u003cp\u003eMetal‑oxide (SnO₂) sensing element whose resistance drops as gas concentration increases, providing an analog signal correlated to gas levels.\u003c\/p\u003e\n\u003cp\u003eBreakout module integrates the MQ‑2 sensor, comparator circuit, and trim potentiometer, exposing both analog (AO) and digital (DO) outputs for flexible use.\u003c\/p\u003e\n\u003cp\u003eHigh sensitivity and fast response over a typical detection range of roughly 200–10,000 ppm for many target gases, depending on calibration.\u003c\/p\u003e\n\u003cp\u003eOnboard power and signal LEDs make it easy to verify sensor power and digital alarm output at a glance.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cp\u003eSensor type: MQ‑2 metal‑oxide semiconductor (MOS) gas sensor.\u003c\/p\u003e\n\u003cp\u003eOperating voltage: typically 5 V DC on standard modules (some support 2.5–5 V).\u003c\/p\u003e\n\u003cp\u003eDetection gases: LPG, propane, butane, methane, hydrogen, alcohol, carbon monoxide, and smoke.\u003c\/p\u003e\n\u003cp\u003eTypical concentration range: about 200–10,000 ppm for combustible gases (exact ranges vary by gas and calibration).\u003c\/p\u003e\n\u003cp\u003eHeater voltage: around 5.0 V ± 0.2 V to maintain sensor operating temperature.\u003c\/p\u003e\n\u003cp\u003eOutputs: analog voltage proportional to gas concentration (AO) and digital TTL output (DO) with adjustable trigger threshold via onboard potentiometer.\u003c\/p\u003e\n\u003cp\u003eModule size: typically around 32 × 20 to 40 × 21 mm, with 4‑pin header (VCC, GND, AO, DO).\u003c\/p\u003e\n\u003cp\u003ePreheat time: requires several seconds for basic operation, and up to 24 hours initial burn‑in for stable calibrated measurements.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eIdeal Uses\u003c\/h2\u003e\n\u003cp\u003eDIY gas leak alarms for LPG and natural gas around stoves, heaters, and gas lines (non‑certified, hobby use).\u003c\/p\u003e\n\u003cp\u003eSmoke and fumes detection in workshops, garages, and maker spaces to trigger fans or alerts.\u003c\/p\u003e\n\u003cp\u003eSmart‑home and IoT projects that monitor air for combustible gases and send notifications or control ventilation.\u003c\/p\u003e\n\u003cp\u003eEducational projects exploring gas‑sensing principles, analog signal processing, and calibration with microcontrollers.\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp\u003e2 × MQ‑2 Combustible Gas \u0026amp; Smoke Sensor Module.\u003c\/p\u003e\n\u003ch2\u003eSafety Note\u003c\/h2\u003e\n\u003cp\u003eThe MQ‑2 is intended for hobby and educational gas‑detection projects and is not a certified safety device. Do not rely on this module as the only protection against gas leaks or fire; always follow local safety codes and use approved detectors for life‑critical applications.\u003cbr\u003e\u003c\/p\u003e","brand":"sugar","offers":[{"title":"Default Title","offer_id":44770542354567,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/MQ-135AirQualityGasSensor.png?v=1780437193","url":"https:\/\/sugarstore.dev\/products\/mg996r-metal-gear-high-torque-servo-standard-size-rc-robotics-servo-copy","provider":"sugar","version":"1.0","type":"link"}