Inland RPI 4-Channel Relay 5V Shield for Raspberry Pi/ CE Certification - Micro Center
waveshare Raspberry Pi Expansion Board Power Relay Module for Raspberry Pi A+/B+/2B/3B/3B+ to Control High Voltage/high Current : Amazon.ca: Electronics
I made a raspberry pi powered home theater automation system. : r/raspberry_pi
Set Up Raspberry Pi Home Automation
Single Room Home Automation Controller - Share Project - PCBWay
Evaluating Raspberry Pi As A Programmable Logic Controller | Hackaday