MQ-3 Alcohol Ethanol Sensor

DescriptionMQ-3 Alcohol Ethanol SensorMQ3 Alcohol Ethanol Sensor Breath Gas Ethanol Detection Gas Sensor Module For Arduino.Description:Size: approx. 32 x 22 x 27mmMain chip: LM393, ZYMQ-3 gas detectorWorking Voltage: DC 5VWith 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.Color is shown as pictures.Package Included:1 x Gas Sensor Module