MQ-135 Gas Sensor Module for Air Quality & CO2 Detection

MQ-135 Gas Sensor Module – Versatile Air Quality and CO2 Sensor for IoT and Safety Applications

The MQ-135 Gas Sensor Module is designed to detect a broad range of harmful gases such as carbon dioxide (CO2), ammonia (NH3), benzene, smoke, and other air pollutants. It provides both analog and digital outputs for easy integration with microcontrollers like Arduino, ESP32, and Raspberry Pi.

This sensor is widely used in indoor air quality monitoring, pollution detection, and smart home environmental systems. With its adjustable sensitivity and fast response, the MQ-135 is an excellent choice for developing IoT-based air monitoring solutions across Bangladesh.

Key Features:

• Detects CO2, NH3, benzene, smoke, and other harmful gases

• Analog and digital output pins

• Operating voltage: 5V

• High sensitivity with fast response time

• Adjustable detection threshold via onboard potentiometer

• Compact module with mounting holes

Applications:

• Indoor air quality monitoring

• Smart home and office environmental control

• Pollution detection and alert systems

• IoT-based health and safety projects

• Academic and hobbyist electronics projects in Bangladesh

The MQ-135 sensor module is a cost-effective and reliable solution for real-time air quality detection and pollution monitoring in embedded and IoT systems.