Description

• Size: 32mm X22mm X30mm length * width * height  

• The main chip: LM393, MQ135 gas sensing probe  

• Operating voltage: DC 5V  

• Features:  

• 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;  

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