It is a MQ-3 Alcohol Ethanol Sensor Module,It has Fast response and High sensitivity, small size, high efficiency, long term stable and reliable quality,easy installation and use. Applied to the driver's alcohol test,Ethanol Steam Detection and DIY ect.Features:
- High sensitivity to alcohol and small sensitivity to Benzine .
- Fast response and High sensitivity
- Stable and long life
- Simple drive circuit
- They are suitable for alcohol checker, Breathalyser.
- 1 x MQ-3 Sensor