Electronic Spices MQ-3 Alcohol Detector Ethanol Gas Detection Sensor Module Analog output 0-5V voltage Electronic Components Electronic Hobby Kit

For motor vehicle drivers and other non-drink operations of on-site inspection, but also for other places of ethanol vapor detection, detection of alcohol range: detection range of 10 ~ 1000ppm; MQ-3 Alcohol Ethanol Gas Sensor is a low cost semiconductor sensor. It can detect the presence of alcohol gases including alcohol, benzine, methane, hexane, CO and LPG. It is uses SnO2 material, whose conductivity is lower in clean air. Its conductivity increases as the concentration of alcohol gases increases. Additionally is has a high sensitivity to alcohol and has a good resistance to disturbances due to smoke, vapor and gasoline.