MQ3 alcohol sensor
Sensitive material of MQ3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exists, The sensorâ€™s conductivity is higher along with the gas concentration rising. MQ3 gas sensor has a high sensitivity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapour. The sensor could be used to detect alcohol with different concentration, it is with low cost and suitable for different application.