Alcohol Gas Sensor MQ-3

Alcohol Gas Sensor MQ-3
Pololu item #: 1634 452 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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Gas sensor with blue plastic case with quarter for size reference.

Gas sensor with blue plastic case with quarter for size reference.

Gas sensor with blue plastic case bottom view.

Gas sensor with blue plastic case bottom view.

Gas sensor with blue plastic case top view.

Gas sensor with blue plastic case top view.