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  Product info
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 


  • 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


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.

How to use the sensor module : Click Here

For more information & Data Sheet of this product, please click here.
This product was added to our catalog on Thursday 24 August, 2017.
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