MQ4 - Methane Natural Gas Sensor

SKU: VS00008

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This is a simple-to-use compressed natural gas(CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.

Technical Specification:

  • Power requirements: VCC - 5V±0.1
  • DO output: TTL digital 0 and 1 (0.1 and 5V)
  • AO output: 0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
  • Detection Gas: Natural gas/Methane
  • Detection Concentration: 200-10000ppm (Natural gas / Methane)
  • Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
  • Heater consumption: less than 750mw
  • Operating temperature: 14 to 122 °F (-10 to 50°C)


  • Good sensitivity to Combustible gas in wide range
  • High sensitivity to CH4, Natural gas
  • Small sensitivity to alcohol, smoke
  • Fast response Stable and long life
  • Simple drive circuit


  • Used in gas leakage detecting equipment for homes and industry. They are suitable for detecting of CH4and CNG
  • Industrial Combustible gas detector
  • Portable gas detectors

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