MQ3 sensor for alcohol sensing

Alcohol Sensor MQ3 is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.
5V DC or AC circuit
Requires heater voltage
Operation Temperature: -10 to 70 degrees C
Heater consumption: less than 750mW
MQ3 sensors also available in modules having Analogue and Digital output. Operating on 5VDC, with sensitivity control via on board variable preset.

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Description

Alcohol Sensor MQ3 is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC.
5V DC or AC circuit
Requires heater voltage
Operation Temperature: -10 to 70 degrees C
Heater consumption: less than 750mW

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