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1. Size: 32mm X22mm X30mm length * width * height?
2. The main chip: LM393， MQ135 gas sensing probe?

3. Operating voltage: DC 5V

Package Include:1 pcs

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