Gas Sensors

MQ135 Gas Sensor Module for Air Quality

Posted On June 21, 2019 at 11:18 am by / Comments Off on MQ135 Gas Sensor Module for Air Quality

Working voltageDC 5V
Working current150mA
DOUTTTL output
AOUTAnalog output
Preheat timeOver 20s
Dimension32mm x 22m x 27mm(HIGH 27mm)

Description:Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and suitable for different application.
Used for family,Surrounding environment noxious gas detection device, Apply to ammonia, aromatics, sulfur, benzene vapor, and other harmful gases/smoke, gas detection, tested concentration range: 10 to 1000ppm


  • Working voltage:DC 5V
  • Working Current: 150mA
  • DOUT: TTL output
  • AOUT: Analog output
  • Preheat time: Over 20s
  • Dimension: 32mm x 22m x 27mm(HIGH 27mm)