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

This power relay expansion module is specially customized for Raspberry Pi series single-board computers, integrating dual cooling fans, relay control unit and auto color changing status LED all in one compact board. It provides reliable load control capability while effectively solving overheating issues during continuous Raspberry Pi operation.

The built-in dual cooling fans actively dissipate heat to prevent CPU thermal throttling when the Raspberry Pi runs long-duration tasks. The auto color changing LED indicator automatically switches colors according to module operating status, allowing users to quickly judge working conditions without complex software checking.

Perfectly compatible with Raspberry Pi A+, 3A+, B+, 2B, 3B, 3B+ and 4B models. The expansion board can directly realize switch control of external electrical loads via relay output channels. It is widely applied in smart home control systems, industrial monitoring, robot projects, automated experimental platforms and various Raspberry Pi DIY development projects.

With optimized circuit layout and stable power protection design, this relay expansion module avoids voltage surges and signal interference during relay switching. Simple installation and easy wiring, no complicated modification required. Plug and play after simple configuration. Great choice for electronic enthusiasts, makers, students and developers to build automated control projects based on Raspberry Pi.