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Green Raspberry Pi relay board with two small fans and multicolour LED indicator

SMUGDESK

SMUGDESK Raspberry Pi Power Relay Expansion Module Dual Fans Auto LED

SKU CH-GCMJ-WJVQT

Relay expansion board for Raspberry Pi with dual cooling fans and auto colour-changing status LEDs

  • Safely control external devices with integrated power relay
  • Dual cooling fans lower operating temperature during long tasks
  • Auto colour-changing LED gives instant visual status feedback
  • Compatible with Raspberry Pi A+ through 4B models
  • Standard stacking layout enables quick mounting without complex wiring

Power Relay Expansion for Raspberry Pi

The SMUGDESK module adds a controllable power relay to Raspberry Pi boards from A+ through 4B. Dual cooling fans actively reduce operating temperature during extended use. An auto colour-changing LED gives immediate visual feedback on relay state and system status. The standard stacking layout allows direct mounting without complex wiring, making it suitable for smart-home and DIY automation projects.

Makers needing switched loads and active cooling

This board suits hobbyists who want to switch external devices such as lights, motors or sensors while keeping the Pi cool. The integrated fans and status LED simplify long-running unattended operation. Builders who require multiple independent relay channels, higher current ratings or a different form factor should look at alternative relay hats or separate fan solutions.

Check GPIO pin availability and power budget

Verify that your Raspberry Pi model matches the listed compatibility range before purchase. Ensure the 40-pin header is free for stacking and that the Pi’s power supply can deliver enough current for the board, fans and any connected load. Confirm that your enclosure provides clearance for the dual fans and that no other add-on boards occupy the same pins.

Highlights

  • Safely control external devices with integrated power relay
  • Dual cooling fans lower operating temperature during long tasks
  • Auto colour-changing LED gives instant visual status feedback
  • Compatible with Raspberry Pi A+ through 4B models
  • Standard stacking layout enables quick mounting without complex wiring

Specifications

No published specifications for this item yet.

Questions about this item

Which Raspberry Pi models can I stack this relay module onto?

It fits Raspberry Pi A+, 3A+, B+, 2B, 3B, 3B+ and 4B boards using the standard GPIO header.

Will the dual fans on this module cool my Raspberry Pi 4B during heavy loads?

Yes, the built-in dual fans actively expel heat from the Pi mainboard to keep temperatures stable during long-running tasks.

How do I know the relay has switched on after I configure it?

The auto colour-changing LED provides real-time visual feedback so you can see the relay state at a glance.

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