Sell MQ3 MQ-3 Alcohol decector gas sensor Module best price

Alcohol Ethanol Sensor Breath Gas Detector Ethanol Detection MQ-3 for Arduino Article-Nr.:5401308 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 Color is shown as pictures PLS NOTE that due to lighting effects, monitor's brightness/ contrass settings ect, there could be some slight differences in the color tone of the pictures and the actual item!