Gas Sensor Mq3


5V operation
Simple to use
LEDs for output and power
Output sensitivity adjustable
Analog output 0V to 5V
Digital output 0V or 5V




This alcohol sensor 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.


There are no reviews yet.

Be the first to review “Gas Sensor Mq3”

Your email address will not be published. Required fields are marked *