MQ-4

Working Principle:

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.

Pin Configuration:

 Vcc: 5v

GND: GND

A0: Analog pin of arduino

D0: Digital pin of arduino:

 

Advantages:

  • High sensitivity
  • High response

 

Application:

  • Domestic gas leakage detector
  • Industrial Combus
  • tible gas detector
  • Portable gas detector
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