MQ135 - Air Quality Gas Sensor Module
Description:
MQ135 Air Quality Gas Sensor Module is a popular and widely used sensor designed for detecting various harmful gases in the air. It is specially built for air quality monitoring and can sense a wide range of gases that are hazardous to human health, such as Ammonia (NH3), Nitrogen Oxides (NOx), Alcohol, Benzene, Smoke, and Carbon Dioxide (CO2).
Features:
1. Detects a wide range of gases affecting air quality
2. High sensitivity to Ammonia, Benzene, Alcohol, Smoke & CO2
3. Dual Output: Analog (AO) & Digital (DO)
4. Fast response and recovery time
5. Adjustable sensitivity via potentiometer
6. Long life and stable performance
7. Low cost and easy to use
8. LED Indicators for Power and Digital Output Status
9. Ideal for indoor and outdoor air quality monitoring
Diagram:
Specifications:
| Sensor Type | Semiconductor Gas Sensor |
| Detectable Gases | Ammonia (NH3), Nitrogen Oxides (NOx), Alcohol, Benzene, Smoke, Carbon Dioxide (CO2), and other harmful gases |
| Detection Range | 10 ppm ~ 1000 ppm |
| Operating Voltage | 5V DC |
| Heating Voltage | 5V ± 0.1V |
| Response Time | ≤ 10 Seconds |
| Recovery Time | ≤ 30 Seconds |
| Preheat Time | ≥ 24 Hours |
| Operating Temperature | -10°C to +50°C |
| Operating Humidity | 20% ~ 90% RH |
| Power Consumption | ≤ 900mW |
| Dimensions | 32mm x 20mm x 22mm |
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