MQ- 3 Analog Alcohol Sensor for arduino (Keyestudio)

The MQ3 from Keyestudio is suitable for detecting alcohol. It can be used in a breath analyzer, It has good selectivity because it has higher sensitivity to alcohol and lower sensitivity to Benzine. The sensitivity can be adjusted by rotating the potentiometer.

Specification:

• Power Supply: 5V
• Interface Type: Analog
• Quick response and High sensitivity
• Simple drive circuit
• Stable and long service life

Wiki page

Sample Code