Alcohol Gas Sensor MQ-3

Pololu item #: 1634
Brand: Unspecified
Status: Discontinued 
RoHS 3 compliant

This product has been discontinued.

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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