MQ-2 Gas Detection Module is a widely used sensor module designed for detecting gases such as smoke, carbon monoxide (CO), methane (CH4), and liquefied petroleum gas (LPG). It is part of the MQ series of sensors, which are commonly used in various gas detection and environmental monitoring applications.
Operating Voltage is +5V
Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO and even methane
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