MQ-7 CO sensor
MQ-7 CO sensor
MQ-7 CO sensor
MQ-7 CO sensor
MQ-7 CO sensor
MQ-7 CO sensor

MQ-7 CO sensor

MQ-7 CO sensor (20 to 2000 ppm)




This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.

This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.


  • Module Size: 30×19×15mm/1.18*0.74*0.59"
  • Input Voltage: DC5V
  • Power Dissipation: 150mA
  • DO Output: 0.1-5V
  • AO Output: 0.1-0.3V
  • Detectable Concentration: 20-2000ppmCO

Module features:

  • High quality double panel design
  • Power and TTL signal output indication
  • Has better sensitive detection for carbon monoxide
  • Has a long service life and reliable stability
  • Suitable for the detection of carbon monoxide, gas, etc
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