MQ-135 Air Quality Sensor Hazardous Gas Detection Module

1PCS MQ135 MQ-135 Air Quality Sensor Hazardous Gas Detection Module FOR Arduino

Product information

Features 
1. Size: 32mm X22mm X30mm length * width * height 
2. The main chip: LM393, MQ135 gas sensing probe 
3. Operating voltage: DC 5V

Features: 
1. Signal output indicator instructions; 
2. Dual signal output (analog output, and TTL level output); 
3. TTL output valid signal is low; (output low signal light, which can be accessed microcontroller IO port) 
4. Analog output with increasing concentration, the higher the concentration, the higher the voltage; 
5. Sulfide, benzene Department of steam, smoke and other harmful gases with high sensitivity; 
6. Has a long life and reliable stability; 
7. Rapid response recovery characteristics;

Applications: 
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 range: 10 to 1000ppm