MQ135 Air Quality Control Gas Sensor Module (NH3, NOx, Alcohol, Benzene, Smoke and CO2)

LKR 400.00

MQ135 Gas Sensor/Detector Module- Arduino Compatible NH3, NOx, alcohol, Benzene, smoke, CO2

Out of stock


  • High sensitivity to butane, propane, methane
  • The reference concentration can be adjusted by the blue potentiometer, clockwise to reduce the reference concentration, counter-clockwise rotation, the reference concentration
  • The Heating Voltage: 5 ± 0.2V (AC · DC)
  • The Working Current: 150ma
  • The Loop Voltage: < DC15V (Maximum DC15V)
  • The Load Resistance: 1K (Adjustable)
  • The Detection Concentration Range: 100-20000ppm (Different Concentrations of Different Gas Ranges)
  • Clean the Air Voltage: < 1.5V
  • The Sensitivity: < 3%
  • The Response Time: < 1S (Warm-Up 3-5 Minutes)
  • Response Time: < 30S
  • Component Power Consumption: < 0.9W
  • The Working Temperature: -10 ~ 50 ° (Nominal Temperature 20 °)
  • The Working Humidity: 95% RH (Nominal Humidity 65% RH)

Pin Definition

  • VCC: Connect 5V power supply positive pole
  • DOUT: digital signal output, you can directly access the MCU IO port
  • AOUT: analogue signal output, AD converter can be connected to the input port in order to calculate the specific concentration of gas value
  • GND: 5V power supply negative
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