MQ135 Air Quality Detector Sensor | Gas sensor

৳ 197.00

In stock

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They are used in air quality control equipments for buildings/offices, are suitable for detecting of NH3,NOx, alcohol, Benzene, smoke,CO2 ,etc. This module provides both digital and analog outputs. Threshold level for digital output can be easily adjusted using the preset on the board. MQ-135 sensor module can be easily interfaced with Microcontrollers, arduino and etc.


  • Low Cost
  • High Sensitivity to NH3,NOx, alcohol, Benzene, smoke and CO2 Gas
  • Flat Response
  • Stable and Long Life
  • Both Digital and Analog Outputs
  • On-board LED Indicator


  • Main chip:MQ-135 gas sensor
  • Working Voltage: 5V DC
  • TTL output valid signal is low
  • Anolog output

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