The MQ2 gas sensor can detect H2, CH4, CO, Alcohol, Smoke and LPG (Liquefied Petroleum Gas). The sensor has a high sensitivity that can be easily adjusted by the trimmer resistor on-board. It works well with Arduino and Raspberry Pi.
The sensor comes with the following specifications:
- Power Input: 5V
- Pins: VCC, Digital Out, Analog Out, GND
- Sensitivity: adjustable