MQ135 Air Quality Sensor Module

MQ135 Sensor Air Quality Sensor Hazardous Gas Detection Module Arduino. Detailed Description : The main chip: LM393, MQ135 gas sensing probe Operating voltage: DC 5V Feature : Signal output indicator instructions; Dual signal output (analog output, and TTL level output); TTL output valid signal is low; (output low signal light, which can be accessed microcontroller IO port) Analog output with increasing concentration, the higher the concentration, the higher the voltage; Sulfide, benzene Department of steam, smoke and other harmful gases with high sensitivity; Has a long life and reliable stability; Rapid response recovery characteristics; Application : A hazardous gas detection apparatus for the family, the environment, suitable for ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other gases harmful gas detection, gas-sensitive element test concentration. Air quality sensor is for detecting a wide range of gases, including NH3, NOx, alcohol, benzene, smoke and CO2. Ideal for use in office or factory, simple drive and monitoring circuit. Arduino smells alcohol : Arduino smells alcohol