Raspberry Pi Power Relay Expansion Module with Dual Cooling Fans & Auto Color Changing LED, Relay Board for Pi A+ 3A+ B+ 2B 3B 3B+ 4B

This power relay expansion module is specially designed for Raspberry Pi series single-board computers, equipped with dual cooling fans and auto color changing LED indicators to bring stable and visualized operation experience for your DIY projects.

The onboard relay enables your Raspberry Pi to safely switch and control external loads, supporting a wide range of automation applications such as smart lighting, motor control, sensor control and remote electrical equipment management. The dual cooling fan design continuously expels accumulated heat during long-running tasks, preventing overheating and maintaining stable performance of the Raspberry Pi mainboard.

Featured auto color changing LED lights offer intuitive working status feedback. You can quickly judge the working mode and relay state at a glance without complex program checking. The module adopts standard stacking structure, easy to mount on compatible Raspberry Pi boards without complicated wiring.

It has excellent compatibility and works perfectly with Raspberry Pi A+, 3A+, B+, 2B, 3B, 3B+ and 4B models. Reserved expansion pins leave space for further hardware modification and function expansion.

Plug and simple configuration, friendly for electronic hobbyists, student makers and smart home developers. Perfect for robotics projects, industrial monitoring, home automation, greenhouse control and all Raspberry Pi-based embedded development systems.