MQ3 Alcohol Benzine Gas Module    

It is used for on-site detection of motor vehicle drivers and other workers who are strictly prohibited from drinking. It is also used for detection of ethanol vapor in other places.

Features & Specifications:

Sensitive to alcohol, ethanol.

It has signal output indication.

dual-channel signal output (analog output and TTL level output).

TTL output effective signal is low level. (When the output signal light is on at low level, it can be directly connected to the single chip computer).

Analog output 0-5V voltage, the higher the concentration, the higher the voltage.

 It simplifies the interface to the odd pin spacing of the sensor and provides an interface through standard 4 x 0.1″ header pins.

It has high sensitivity and good selectivity to ethanol vapor.

An onboard LED signals the presence of any gas.

Long-term service life and reliable stability.

Fast Response Recovery Characteristics.

Size: 32mm X22mm X27mm long X wide X high

ain chips: LM393, ZYMQ-3 gas sensors

Working Voltage: DC 5 Volts