Review on π GeeekPi Raspberry Pi Expansion Board 4 Channel Relay Board - Power Relay for Raspberry Pi 4B, 3B+, 3/2B (No Programming/Programmable) by Ricky Gilbert
works, well designed, great document
very good documentation with detailed programming example. Border. Therefore it CANNOT be used for HEAVY DUTY switching applications.
- one year trial version
- hard to tell
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