MQ-2 Gas Sensor (LPG, Propane & Hydrogen)

WaveshareSKU: WAV-9529
Sale price £4.80
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Monitor LPG, propane or hydrogen with this MQ-2 gas sensor from Waveshare!

Note: Please do not use this sensor for critical home/industrial/commercial gas sensing applications. Intended for development and learning/hobby purposes only.


  • 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
  • Sensor only - no cable


  • Power: 2.5V ~ 5.0V
  • Dimension: 40.0mm * 21.0mm
  • Mounting holes size: 2.0mm


    When working with an MCU:

    • VCC ↔ 2.5V ~ 5.0V
    • GND ↔ power supply ground
    • AOUT ↔ MCU.IO (analog output)
    • DOUT ↔ MCU.IO (digital output)

    Package Contents

    • 1x MQ-2 Gas Sensor
    • 1x 4-pin custom connector jumper wire

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