MQ9 Gas Sensor


In stock


  • High sensitivity to carbon monoxide(CO) and CH$
  • Fast response
  • Stable and long life
  • Simple drive circuit

MQ9 is a higly sensitive analogue output sensor which is commonly used as carbon monoxide,CH4 and LPG gas sensor in MQ sensor series. It is a very popular Gas Sensor in verious sectors. The output voltage of the gas sensor increases if the concentration of gas increases. The sensitivity of the sensor is adjustable by the Potentiometer. The MQ9 who is arduino compatible.

The working voltage of MQ9 gas sensor is 5 volt DC and it draws around 340mW. This sensor is capable of detecting carbon monoxide,CH4 and LPG gas concentrations anywhere from 20ppm-2000ppm carbon monoxide, 500ppm-10000ppm CH4, 500ppm-10000ppm LPG.


  • They are used in gas detecting equipment for carbon monoxide, CH4 and LPG in family and industry or car
  • Suitable for detecting of carbon monoxide(CO) and CH4
  • Weight 10 g
    Dimensions 25 × 33 × 25 mm
    Main Chip LM393
    Operating Voltage 5V
    Load resistance Adjustable
    Heater resistance 33Ω ± 5%
    Heating consumption <340 mW
    Sensing Resistance 2 KΩ – 20 KΩ
    Concentration Scope 20 – 2000 ppm
    Preheat Time Over 48 hours
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