We provide kinds of samrt distribution box, the difference is the number of channels and load power circuit current.
This is demo video that how to diy a Smart Power Distribution Box link: https://www.kincony.com/smart-power-switch-made-by-kc868-h8-controller.html
YouTube video tour: https://www.youtube.com/playlist?list=PLQUWhE_6LeOSUgDlpb4aF07yCfpKxLjC8