The MQ-2 Gas Sensor Module is a popular electronic sensing board used to detect smoke and a range of common combustible gases in the surrounding air. It is one of the most widely used modules in maker and electronics projects, making it a great fit for students, hobbyists, and developers building DIY safety systems, smart-home alarms, or environmental monitoring setups. The module is designed to connect easily to microcontrollers such as Arduino, ESP32, ESP8266, and Raspberry Pi.
Key features
- Based on the well-known MQ-2 sensing element for smoke and combustible gas detection.
- Provides both analog and digital output for flexible reading on most microcontroller boards.
- On-board sensitivity adjustment and indicator LEDs for quick setup and testing.
- Compact module that mounts neatly on a breadboard or inside a project enclosure.
- Simple, well-documented wiring that works with countless open-source code examples.
Typical uses
- DIY smoke and gas-leak alarm projects for the home or workshop.
- Arduino and ESP32 learning kits and electronics coursework.
- Air-quality and environmental monitoring prototypes.
- Smart-home and IoT safety builds.
How to choose / tips
- Confirm your board supports analog input if you want graded readings rather than a simple on/off signal.
- Allow the sensor to warm up after powering on for more stable readings.
- Use the on-board potentiometer to fine-tune the digital trigger point for your environment.
Why tna W rna
At tna W rna we focus on reliable sourcing and quality electronic parts, with fast delivery across Egypt and convenient cash on delivery. Whether you are a student or a professional maker, you get a dependable component to keep your project moving.
