MQ-135 Sensor Air Quality Sensor Hazardous Gas Detection Module

Detailed Description:

• The main chip: LM393, MQ135 gas sensing probe
• Operating voltage: DC 5V

Sensitive gas:

Ammonia, nitrogen oxide, alcohols, aromatic compounds, sulfide and smoke

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