MQ3 Gas Sensor Break Out Board

Alcohol Ethanol Sensor Breath Gas Detector Ethanol Detection MQ-3

Product Details:
Alcohol Detector
Condition: New
Size: approx. 32 x 22 x 27mm
Main chip: LM393, ZYMQ-3 gas detector
Working Voltage: DC 5V
With signal output instructions
Two-way signal output (TTL level output and analog output)
TTL output effectively signal for low level(when the output low level signal lights, can directly connected microcomputer)
Analog output 0 ~ 5v voltage, the higher the concentration, the higher the voltage
Has a high sensitivity and good selectivity
Has long service life and reliable stability
Rapid response recovery features
For motor vehicles and other prohibition drunken drivers homework personnel on-site testing, also used in other places of ethanol vapor detection .