DESCRIPTION

MQ-3 module is has a high sensitivity for detecting Alcohol and low sensitivity for Benzine, CH4, Hexane, LPG, CO. The module gives out the concentration of the gases as an analog voltage equivalent to the concentration of the gases. The module also has an onboard comparator for comparing against an adjustable preset value and giving out a digital high or low.

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.

DEVELOPMENT SOURCES 

FEATURES

• Voltage:5V
• Detecting Concentration:0.05-10mg/L Alcohol
• Analog and Digital Output
• Digital Out is High or Low based on an adjustable preset threshold.

ALSO SEARCHED AS:

MQ 3 - Alcohol Gas Sensor Module