MQ-135 air quality detection sensor module/MQ135 air detection sensor

Product Characteristic

Has good sensitivity to harmful gases over a wide concentration range, with high sensitivity to atmospheres such as ammonia, sulfides, and benzene

Long lifespan, low cost

A simple driving circuit is sufficient

Product Application

Household air pollution alarm

Industrial air pollution controller

Portable air pollution detector

Product Descriptions

The gas sensing material used in MQ135 gas sensor is tin dioxide (SnO2) with low conductivity in clean air. When there is pollutant gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of pollutant gas concentration in the air. The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.

The MQ135 sensor has high sensitivity to ammonia, sulfides, and benzene vapors, and is also ideal for monitoring smoke and other harmful substances. This sensor can detect various harmful gases and is a low-cost sensor suitable for multiple applications.

Figure 1 shows the typical sensitivity characteristic curve of the sensor.

The vertical axis in the figure represents the resistance ratio (RS/Ro) of the sensor, and the horizontal axis represents the gas concentration.

Rs represents the resistance value of the sensor in gases of different concentrations

Ro represents the resistance value of the sensor in 100ppm ammonia gas

All tests in the figure were completed under standard test conditions.

Product Show

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Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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