Winsen MQ135 Semiconductor Air Quality Sensor - SnO2 Gas Detection Module
The Winsen MQ135 is a semiconductor-based air quality sensor module designed for detecting a wide range of toxic gases and pollutants, including ammonia, benzene series vapors, smoke, and sulfides. It operates on a standard 5V DC circuit and provides a simple analog output signal proportional to gas concentration, making it compatible with Arduino, Raspberry Pi, and other microcontroller platforms for IAQ monitoring.
Features
- Semiconductor SnO2 sensing element for broad-spectrum toxic gas detection.
- Detection range of 10–1000 ppm for ammonia, toluene, hydrogen, smoke, and sulfides.
- Standard operating voltage: 5.0V ±0.1V for both heater (VH) and circuit (Vc).
- Durable bakelite base with metal cap encapsulation for stable performance.
- Simple drive circuit with analog output for easy integration into monitoring systems.
Out of stock
The Winsen MQ135 gas sensor utilizes a tin dioxide (SnO2) semiconductor sensing element. In clean air, the sensor’s conductivity is low. When target pollutant gases are present, the conductivity increases proportionally with the gas concentration. This change in conductivity can be converted into a corresponding output signal via a straightforward conditioning circuit, enabling quantitative gas concentration monitoring.
Engineered for long-term stability and reliability, the MQ135 features a robust bakelite base and metal cap construction. It is designed for continuous operation in both domestic and industrial environments, providing a cost-effective solution for air quality assessment and toxic gas leak detection without requiring complex calibration or signal processing.
Additional Information
| Weight | 0.02 kg |
|---|---|
| Dimensions | 4 × 3 × 1 cm |
