MQ2 Gas Sensor Module Methane Butane LPG Smoke Gas Sensing

Description of MQ2 Gas Sensor Module Methane Butane LPG Smoke Gas Sensing The MQ-2 Gas sensor is sensitive to smoke and to the following flammable gases: LPG Butane Propane Methane Alcohol Hydrogen The resistance of the sensor is different depending on the type of the gas.The smoke sensor has a built-in potentiometer that allows you to adjust the sensor digital output (D0) threshold. This threshold sets the value above which the digital pin will output a LOW signal.   Please visit this page for a simple idea about the product.