MQ2 Gas Sensor Module

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 Operating Voltage is +5V Analog output voltage: 0V to 5V Digital Output Voltage: 0V or 5V (TTL Logic) Preheat duration 20 seconds Can be used as a Digital or analog sensor The Sensitivity of Digital pin can be varied using the potentiometer Product 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.
• Additional Resources MQ2 Gas Sensor Datasheet Interfacing MQ2 Gas Sensor with Arduino.