MQ 135 Air Quality Sensor

600.00 Br

  • Wide detecting scope
  • Fast response and High sensitivity
  • Stable and long life
  • Operating Voltage is +5V
  • Detect/Measure NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
  • Analog output voltage: 0V to 5V
  • Digital output voltage: 0V or 5V (TTL Logic)
  • Preheat duration 20 seconds
  • Can be used as a Digital or analog sensor
  • The Sensitivity of Digital pin can be varied using the potentiometer
  • MQ 135 – Gas Sensor for Air Quality
  • The MQ-135 gas sensor senses the gases like ammonia nitrogen, oxygen, alcohols, aromatic compounds, sulfide and smoke.
  • The MQ-135 Gas sensors are used in air quality control equipments and are suitable for detecting¬†or measuring of NH3, NOx, Alcohol, Benzene, Smoke, CO2. The MQ-135 sensor module comes with a Digital Pin which makes this sensor to operate even without a microcontroller and that comes in handy when you are only trying to detect one particular gas. ¬†If you need to measure the gases in PPM the analog pin need to be used. The analog pin is TTL driven and works on 5V and so can be used with most common microcontrollers.


  • Air quality monitor
  • Detection of harmful gases
  • detect domestic/Industrial air pollution
  • Portable air pollution detection
  • Used to detect leakage/excess of gases like Ammonia, nitrogen oxide, alcohols, aromatic compounds, sulfide and smoke.

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