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Raspberry Pi Home Automation - Control Lights, Computers, CCTV and More! : 7 Steps (with Pictures) - Instructables
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RPi Relay Board Raspberry Pi Expansion Board, Three Channel (3-CH) Power Relay Module for Raspberry Pi 4B/3B+/3B/2B/A+/B+, Loads up to 5A 250V AC or 5A 30V DC : Amazon.ca: Electronics
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