MQ-2 Smoke Hydrogen Propane Gas Sensor Module

Features:

• Sensitive for LPG, propane, hydrogen
• Output voltage boosts along with the concentration of the measured gases increases
• Fast response and recovery
• Features boost circuit
• Adjustable sensitivity
• Signal output indicator

Pin Configuration:

• Pin No:
• Pin Name:
• Description

• For Module
• • 1Vcc: This pin powers the module, typically the operating voltage is +5V
  • 2Ground: Used to connect the module to system ground
  • 3Digital Out: You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer
  • 4Analog Out: This pin outputs 0-5V analog voltage based on the intensity of the gas
• For Sensor
• • 1H -Pins: Out of the two H pins, one pin is connected to supply and the other to ground
  • 2A-Pins: The A pins and B pins are interchangeable. These pins will be tied to the Supply voltage
  • 3B-Pins: The A pins and B pins are interchangeable. One pin will act as output while the other will be pulled to ground
• Applications
• • Gas leakage detector
  • Gas leakage detector