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MQ2 Module Gas Sensor


Model / Part NumberMQ-2Target gasesLPG,Propane and HydrogenOperating Voltage5VOperating Humidity0-95%RHPreheat DurationOver 48 hoursHeater Voltage5.0 V +/- 0.2 VHeater Resistance31 ohm +/- 3 ohm




The analog gas sensor - MQ2 is used in gas leakage detecting equipments in consumer and industry markets, this sensor is suitable for detecting LPG, i-butane, propane, methane ,alcohol, Hydrogen, smoke.It has a high sensitivity and fast response time.And the sensitivity can be adjusted by the potentiometer.


Power supply needs 5V

Interface type Analog

Pin Definition 1-Output 2-GND 3-VCC

Wide detecting scope

Fast response and High sensitivity

Simple drive circuit

Stable and long life

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