The MQ Series Gas Sensor Combo is a comprehensive kit for detecting a wide variety of gases and air quality parameters, ideal for robotics, automation, and IoT-based environmental monitoring projects. This combo includes eight popular gas sensors: MQ-2, MQ-3, MQ-4, MQ-5, MQ-6, MQ-7, MQ-8, and MQ-135, covering detection of gases such as LPG, methane, hydrogen, alcohol, carbon monoxide, smoke, ammonia, and general air quality.

Each sensor provides both analog and digital output, allowing direct interface with Arduino, Raspberry Pi, ESP32, AVR, PIC, and 8051 microcontrollers. With fast response times and adjustable sensitivity via onboard potentiometers, the sensors are suitable for real-time detection and automated control systems.

The sensors are widely used in applications such as gas leak detection, home safety systems, environmental monitoring, industrial safety, smart home automation, air quality tracking, and educational experiments. They operate at 5V DC, making them compatible with most low-power microcontroller platforms.

This combo set is perfect for educational labs, hobby projects, prototyping, and research applications, providing a versatile, cost-effective solution for experimenting with multiple gases in a single package. All sensors come ready to connect to development boards with standard 4-pin interfaces for rapid prototyping.