The MQ9 gas sensor module is highly useful for carbon monoxide,CH4 and LPG gas detection at home, car or industry. The sensor module can detect carbon monoxide, CH4 and LPG in the air. It is highly sensitive and responding time is very fast. Depending on the requirements of sensitivity, the sensor can be adjusted with a Potentiometer.

MQ9 is a highly 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.

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