This brick comes with a MQ6 gas sensor, you can adjust the sensitivity with the potentioneter.
MQ-6 GAS SENSOR
High sensitivity to LPG, iso-butane,propane
Small sensitivity to alcohol, smoke.
Stable and long life
Simple drive circuit
Typical detection ranges:
Propane, butane, liquified petroleum gas, 300ppm to 10,000ppm
They are used in gas leakage detecting equipments in family and industry, are suitable for detecting of LPG, natural gas , town gas, avoid the noise of alcohol and cooking fumes and cigarette smoke.
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