Gravity: Analog CH4 Gas Sensor (MQ4) For Arduino

The Gravity: Analog CH4 Gas Sensor is an MQ4-based detection module designed to sense methane (CH4), natural gas, and LPG. Operating at 5V with an analog output, it offers fast response times and dependable stability for makers, educators, and hobbyists building environmental monitoring and safety projects.

Target gas detection capabilities

Equipped with an MQ4 probe, this sensor is engineered to detect CH4, natural gas, and LPG. It features reduced sensitivity to potential interferents such as alcohol, cooking fumes, and cigarette smoke.

Fast response and long operational life

The sensor delivers quick response times suitable for real-time gas monitoring. Its simple drive circuit design ensures stable performance and a long operational lifespan.

Electrical specifications and analog interface

The module operates from a 5V power supply and connects to microcontrollers via an analog interface. The 3-pin interface provides straightforward connectivity for power, ground, and analog signal output.

Compact form factor

With a footprint measuring 40 mm by 20 mm (1.57 inches by 0.79 inches), the module fits cleanly into tight robotics builds and embedded enclosures.

Included package contents

The package includes one Arduino-compatible MQ4 CH4 gas sensor module ready for project integration.

Downloads & documentation

• Product wiki (DFRobot)