Prevent accidental power loses with this UPS Pro HAT from 52pi for Raspberry Pi 2 and 3
52pi ICE Cooling Tower brings powerful cooling performance to Raspberry PI 4 and Raspberry Pi 3B+ boards. It comes with a 40mm fan and RGB LEDs.
52pi's DockerPI 4 Channel Relay uses I2C interface to control up to 16 devices while taking up only 2 pins!
Raspberry Pi 4 can run hot! Do you really need a massive cooling stack to keep all 4 cores in check? I'm testing the board thermals with a passive heatsink and 30mm fan included in 52pi Power Board