MQ135 Air Quality Detector Sensor Module

Monitor indoor and outdoor air quality with the MQ135 Gas Sensor Module, ideal for detecting CO₂, NH₃, benzene, alcohol, smoke, and harmful gases. It operates at 5V DC, offering both analog and digital outputs, making it compatible with Arduino, Raspberry Pi, and other microcontrollers. Fast response, long life, and adjustable sensitivity make it perfect for IoT, smart environment projects, and pollution control systems.

MQ135 Air Quality Detector Sensor Module

The MQ135 Air Quality Detector Sensor Module is a versatile and reliable sensor for detecting a wide range of airborne pollutants and harmful gases. Designed for integration with Arduino, ESP8266, and Raspberry Pi, it is an ideal choice for IoT-based environmental monitoring, home automation, and smart city projects.

This sensor detects carbon dioxide (CO₂), ammonia (NH₃), benzene, alcohol fumes, smoke, and other harmful gases commonly found in industrial and urban environments. The MQ135 offers dual output signals (analog and digital), enabling easy calibration and threshold setting using the onboard potentiometer.

Thanks to its fast response time, stable performance, and low power consumption, this sensor module is perfect for use in air purifiers, pollution detection systems, greenhouse monitoring, and academic STEM projects.

🔧 Technical Specifications:

Model: MQ135
Detected Gases: CO₂, NH₃, NOx, alcohol, benzene, smoke
Operating Voltage: 5V DC
Output: Analog & Digital
Load Resistance: 10KΩ (adjustable)
Preheat Time: 20 seconds
Operating Temperature: -10°C to 50°C
Response Time: < 10 seconds
Dimensions: Compact and breadboard-friendly
Compatible with: Arduino, ESP8266, NodeMCU, Raspberry Pi, etc.

💡 Applications:

🏠 Indoor air quality monitoring for smart homes
🏭 Industrial gas leak and pollution detection
🌱 Greenhouse gas monitoring systems
📶 Integration with IoT environmental stations
🎓 STEM education and university research projects
🛠 DIY embedded electronics in Lahore, especially in Johar Town

At ElectroWay, based in Johar Town, Lahore, we stock a wide range of sensor modules including the reliable MQ135, helping you build intelligent, safe, and innovative solutions with ease.

🎥 External Resource (YouTube Demo):

👉 Watch How MQ135 Sensor Works with Arduino

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