9. #MQ_2Gas_Sensor Module Smoke Methane Butane Detection
This sensor module utilizes an MQ-2 as the sensitive component and has a protection resistor and an adjustable resistor on board. The MQ-2 gas sensor is sensitive to LPG, i-butane, propane, methane, alcohol, Hydrogen and smoke. It could be used in gas leakage detecting equipments in family and industry. The resistance of the sensitive component changes as the concentration of the target gas changes. Here’s the complete guide on how to use the MQ-2 smoke sensor with the Arduino.
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