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PI-PLATES RELAYPLATE Development Board, Relay Plate HAT For Raspberry Pi, 7 x 120VAC Relays, UL 60950 Rated
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PiRelay 8 Power Relay Module for Raspberry Pi, 8 Channel Relay Shield for Raspberry Pi, Relay HAT Expansion Relay Board for Raspberry Pi 4B/3B+/3B/2B/B+/A+ : Amazon.in: Computers & Accessories
![wiring - Controlling Switches from both Raspberry Pi relay & Manual [Home Automation] - Raspberry Pi Stack Exchange wiring - Controlling Switches from both Raspberry Pi relay & Manual [Home Automation] - Raspberry Pi Stack Exchange](https://i.stack.imgur.com/cjDmA.png)