MQ135 Air Quality Detector Sensor Module
Series MQ gas sensors
MQ135 overview
The MQ 135 Air Quality Detector Sensor Module For Arduino has lower conductivity in clean air. When the target combustible gas exists, the conductivity of the sensor is higher along with the gas concentration rising. Convert the change of conductivity to the corresponding output signal of gas concentration. The MQ135 gas sensor has a high sensitivity to Ammonia, Sulphide, and Benzene steam, also sensitive to smoke and other harmful gases. It is low cost and suitable for different applications such as harmful gases/smoke detection.
Key specifications
Size
32mm X22mm X27mm
Main chip
MQ-135
Operating Voltage
5V DC
Type
Analog & Digital
Detecting Range
100-1000ppm
Datasheet
datasheet-23.pdf
MQ135 features
- With Signal Output Instructions
- The TTL Output signal is a low level
- Analog 0 ~ 5 v voltage output, the higher the concentration, the higher the voltage
- Color is Showing Pictures.
- Sensitive for Benzene, Alcohol, Smoke
- Fast Response and Recovery
- Adjustable Sensitivity
- Air Quality Sensor Module
- Sensitivity to Ammonia, Sulphide, and Benzene steam
- Signal Output Indicator
- Output Voltage Boosts Along with the concentration of the measured gases increases
MQ135 pinout
| Name | Description |
|---|---|
| Vcc | Used to power the sensor, Generally, the operating voltage is +5V. |
| Ground | Used to connect the module to the system ground. |
| Digital Out | You can also use this sensor to get digital output from this pin, by setting a threshold value using the potentiometer. |
| Analog Out | This pin outputs 0-5V analog voltage based on the intensity of the gas. |
MQ135 applications
- Domestic Gas Alarm
- Industrial Gas Alarm
- Portable Gas Detector
More about MQ135
Specifications
| Condition | New |
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