Alcohol Gas Sensor MQ-3

			Pololu item #: 1634 182 in stock Price break Unit price (US$) 1 4.49 4.95 10 3.99 4.45 Quantity: 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 bottom view.

Gas sensor with blue plastic case top view.