MQ4 CNG Methane Detector Natural Coal Gas Sensor Module

Product Details

  • Product: natural gas/methane sensor module
  • The sensor used: MQ4
  • No of pins: 4
  • Dimension: 31mm x 19mm x 21mm
  • Weight: 6g
  • Package contains: 1 x MQ4 CNG Methane Detector Natural Coal Gas Sensor Module

137.00 (ex. GST)

This gas sensor module uses an MQ4 high sensitive gas sensor as a sensing element. This is a simple device that senses the presence of Methane (CNG) gas at a concentration from 300 ppm to 10,000 ppm, a range suitable for detecting gas leakage. This device can detect CH4, natural gas, LNG, avoid exposure to alcohol, cooking fumes, and cigarette smoke. 

The module is quite simple to use and interface with any controller like Arduino, Raspberry Pi, AVR, etc. it provides an analog output corresponding to the concentration of the gases in the air and an easy-to-use digital output. The device requires minimal external components, just connect the VCC and GND and you are ready to go.


  • Good sensitivity to Combustible gas in a wide range
  • High sensitivity to CH4, Natural gas
  • Small sensitivity to alcohol and smoke
  • On brad potentiometer to set maximum gas concentration beyond which the digital output get triggered
  • Fast response, stable, and long life
  • Simple drive circuit
  • Easy to interface with any controllers


  • Operating voltage: 3V to 5V
  • Input current: 150mA
  • Load resistance: 20KΩ
  • Heater resistance: 33Ω±5%
  • Heating consumption: >750mW
  • Detecting gas: natural gas/methane
  • Detection concentration: 300 ppm to 10000 ppm
  • Operating temperature: -10℃ to 50℃

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