MQ-2 Gas Sensor (Arduino Compatible) Maximize

MQ-2 Gas Sensor (Arduino & Raspberry Pi Compatible)

Use this Gas Sensor to detect Methane, Butane, LPG, smoke and flammable & combustible gases. Digital & Analog output pins. Arduino & Raspberry Pi Compatible.

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Last Updated: 02/21/2024




This Gas Sensor detects Methane, Butane, Propane, alcohol, hydrogen, LPG & smoke. Flammable & combustible gases are detected by the onboard heater which sends an analog signal that increases as the concentration of flammable gases increases. This module also includes a digital output pin with TTL output. The Potentiometer on board is used to set the Digital Output Setpoint. 


  • Wide detecting scope
  • High sensitivity & stability
  • Simple drive circuit
  • Type: MQ-2
  • Detection Zone: 300 - 10000ppmm
  • Characteristic Gas:1000ppmmIso-Butane
  • Sensitivity:R in air/Rin typical gas≥5
  • Sensitive Resistance:1KΩ to 20KΩ in 50ppm Toluene
  • Response Time:≤10s
  • Recovery Time:≤30s
  • Heating Resistance:31Ω±3Ω
  • Heating Current:≤180mA
  • Heating Voltage:5.0V±0.2V
  • Heating Power: ≤900mW
  • Measuring Voltage:≤24V
  • Operating Conditions:
    • Ambient Temperature:-20℃~+55℃
    • Humidity:≤95%RH
    • Oxygen Content:21%
  • Operating Voltage: 5V
  • Compatible with Arduino & Raspberry Pi (for use with Raspberry Pi B or B+ you will need an Analog to Digital Converter Chip)
  • Pinout:
    • VCC: 5V
    • AOUT: Analog Output
    • DOUT: Digital Output
    • GND: 0V


Click here to download the datasheet.

Reference: Arduino Library



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