MQ2 Gas sensor is a Metal Oxide Semiconductor (MOS) type Gas Sensor
mainly used to detect gases like Methane, Butane, LPG, Smoke,
etc. It is also known as Chemiresistors as the gas detection is
based on the change of resistance of the sensing material when the Gas
comes in to contact. If you want to measure a different type of Gas you can
check these Gas Sensors.
MQ2 Gas sensor module works on 5V DC and uses around 800mW. It can
detect LPG, Smoke, Alcohol, Propane, Hydrogen, Methane and Carbon Monoxide
concentrations in a range of 200 to 10000 ppm.
MQ2 Gas Sensor Features &
Specifications
Product Description
To use the MQ2 gas sensor
module, you need to power the device with 5V supply and the Power LED
will start to glow. You should give it some preheating time before start
reading the output. While measuring the gas present, the Output LED will glow
in a specific concentration of the gas. You can change it by using the
potentiometer. Else you can also use the Analog Output to see how your program
reacts to different concentration of gases present.
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