Description
MQ-2 smoke and combustible gas sensor module for Arduino and ESP32 projects. It detects smoke, liquefied gas, butane, propane, methane, alcohol, and hydrogen over a range of 300 to 10,000 ppm (characteristic gas: 1000 ppm isobutane), with sensitivity of Rs in air / Rs in gas of 5 or more.
The sensor heats at 5.0V (±0.2V, ≤180 mA, ≤900 mW, 31Ω ±3Ω heater), responds in ≤10 seconds and recovers in ≤30 seconds. Measuring voltage is ≤24V. It works from -20 to +55°C at ≤95% relative humidity in normal 21% oxygen air, and stores from -20 to +70°C.
Use it for household and factory gas-leak monitoring, smoke detection, and air-quality projects. The module gives both analog and digital outputs with an adjustable threshold potentiometer. I check every order before it ships. Ships from NY, USA.
See also: Robot Sensors · 37 in 1 / 45 in 1 Sensor Modules Starter Kit for Arduino UNO R3 / MEGA2560 · HC-SR04 Ultrasonic Ranging Sensor Module for Arduino, 2-450cm, with Mounting Bracket Options · Guide: Which Sensor Should You Buy? Temperature, Motion, Distance, and Gas
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