MQ 3 Gas Sensor
  • MQ 3 Gas Sensor

MQ 3 Gas Sensor



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MQ 3 Gas Sensor


This alcohol sensor is suitable for detecting alcohol 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.

MQ 3 Gas Sen