Description:
The MQ-135 air quality sensor module is a highly sensitive multi-gas detection device designed for monitoring air pollution and ensuring healthy indoor environments. Ideal for integration into DIY electronics, environmental IoT projects, and Arduino platforms, this module detects a wide range of airborne gases including ammonia (NH3), nitrogen oxides (NOx), alcohol, benzene, smoke, and carbon dioxide (CO2). It offers a reliable solution for developers seeking to implement real-time air quality monitoring in smart home or industrial applications.
Equipped with both analogue and digital outputs, the MQ-135 air quality sensor module provides flexible interfacing options for various microcontrollers. Its long-life sensing element and fast response time make it a dependable choice for projects focused on indoor air quality monitoring. Additionally, the onboard potentiometer allows for adjustable sensitivity, while its compact form factor supports easy mounting in compact environmental monitoring systems. Whether used in standalone setups or connected to a larger environmental network, this environmental gas sensor for IoT delivers consistent, accurate results.
Specifications:
- Sensor Model: MQ-135
- Detection Range: Ammonia (NH3), NOx, Alcohol, Benzene, Smoke, CO2
- Operating Voltage: 5V DC
- Current Consumption: 150 mA (typical)
- Output Type: Analogue & Digital (TTL)
- Preheat Time: ≥ 20 seconds
- Response Time: < 10 seconds
- Operating Temperature: -10°C to +50°C
- Adjustable Sensitivity: Via onboard potentiometer
- Dimensions: Approx. 32 mm × 20 mm
- Mounting: 4 mounting holes for easy placement
- Interface: Standard 4-pin header (VCC, GND, DO, AO)
Features:
- Detects a wide range of harmful gases including CO2, ammonia, benzene, and smoke
- Arduino and microcontroller compatible for flexible integration
- Dual analogue and digital outputs for real-time monitoring and threshold triggering
- Ideal for IoT-based air quality applications and smart home systems
- Compact design with adjustable sensitivity via onboard trimmer
Contents:
- 1 × MQ-135 air quality sensor module
