Review on 💡 High-Quality Power Relay Module for Raspberry Pi 4 3 2 Model B B+ A+ by Melvin Goerge

I needed exactly 3 relays for my Pi so this was the perfect design. The only real problem is their absurd labeling, which doesn't match the Pi's pin numbers or GPIO numbers. P25, P28, and P29 are labeled on the 40-pin HAT connector, but are not the same as Pi pins 25, 28, 29, or GPIO 25, and there are no GPIOs 28 and 29 on the Pi. For those who want To use this, here are the actual pins: P25 = GPIO26, pin 37P28 = GPIO20, pin 38P29 = GPIO21, pin 40.