MQ3 Alcohol Sensor Module

MQ3 Alcohol Sensor Module is made using Alcohol Gas Sensor MQ3. It is a low-cost semiconductor sensor that can detect the presence of alcohol gases at concentrations from 0.05 mg/L to 10 mg/L. The sensitive material used for this sensor is SnO2, whose conductivity is lower in clean air. Its conductivity increases as the concentration of alcohol gases increases. It has a high sensitivity to alcohol and has good resistance to disturbances due to smoke, vapor, and gasoline. This module provides both digital and analog outputs. MQ3 alcohol sensor module can be easily interfaced with Microcontrollers, Arduino Boards, Raspberry Pi, etc.

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has high sensitivity and a fast response time. The sensor provides an analog resistive output based on alcohol concentration.

Description

MQ3 Alcohol Sensor Module is a very easy-to-use low-cost semiconductor Gas sensor Module with analog and digital output. This module uses an MQ3 Alcohol gas sensor as an alcohol gas sensing element. It requires no external components just plug in Vcc & ground pins and you are ready to go. For Digital output, the threshold value can be easily set by an onboard potentiometer. Using this module you can easily interface the MQ3 Alcohol sensor to any Microcontroller, Arduino, or even Raspberry Pi. Since this Gas Sensor module is sensitive to alcohol it can be used in the breathalyzer. MQ3 Sensor also has small sensitivity to Benzine.