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Waveshare RPi Relay Board, with 3-way Relay Control, with Pi 40PIN GPIO Extension Header, Compatible with Raspberry Pi Series Boards, Used for Pi to ...
Relay for Raspberry Pi or Arduino 1-Channel 5V Relay Module 250V/10A
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Control Up To 65,280 Relays With Your Raspberry Pi! - Hackster.io
4-Channel SPDT Relay HAT for Raspberry Pi | Seeed Studio Wiki
