The analog gas sensor – MQ3 is suitable for detecting alcohol, this sensor can be used in a Breath analyser.It has a high sensitivity to alcohol and small sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.
Power supply: 5V
Interface type: Analog
High sensitivity to alcohol and small sensitivity to Benzine
Fast response and High sensitivity
Stable and long life
Simple drive circuit
This product and description is from DFRobot.