The MQ3 Alcohol Gas Sensor Module is used as a alcohol gas sensing element in this module. It requires no external components just plug in Vcc & ground pins and you are ready to go.
For Digital output the threshold value can be easily set by an on-board potentiometer. Using this module you can easily interface MQ3 Alcohol sensor to any Microcontroller, Arduino, Raspberry Pi.
As this Gas Sensor module has high sensitivity and fast response time to alcohol, it can be used in breathalyzer. MQ3 Sensor also has small sensitivity to Benzine.
Package Includes :
1 x MQ3 Alcohol Gas Sensor Module