Alcohol Gas Sensor MQ-3

Alcohol Gas Sensor MQ-3
Pololu item #: 1634 152 in stock

Price break Unit price (US$)
1 4.49 4.95
10 3.99 4.45

backorders allowed

This semiconductor gas sensor detects the presence of alcohol gas at concentrations from 0.04 mg/L to 4 mg/L, a range suitable for making a breathalyser. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.

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Alcohol gas sensor MQ-3 datasheet (153k pdf)