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Gravity: MQ9 Gas Sensor

SKU: SEN0134

The Gravity: MQ9 Gas Sensor is an essential tool for detecting carbon monoxide and combustible gases, featuring a semiconductor sensor with a 5V power supply and analog interface for accurate gas concentration measurements.

Angled shot of back of MQ9 CO gas sensor with colored wires and connection ports for combustible gas detection.-DFRobot product sku:SEN0134 image.

Downloadable Resources

  • Docs
  • Tech Specs
  • Blog
    • 1. Example Code for Arduino-Gas Value Reading

    This article offers a step-by-step guide on reading gas values using Arduino, complete with sample code and wiring diagrams for easy sensor integration.

    Specification

    • Power supply needs: 5V
    • Interface type: Analog
    • Sensor Type: Semiconductor
    • Concentration:
      • 10-1000ppm CO
      • 100-10000ppm combustible gas
    • Size: 36.4x26.6mm

    Pinout

    Num Label Description
    1 Output Signal Output
    2 5V Power
    3 GND GND

    Analog Sensor Pin Definition

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