A great app for managing your connected power device. With this application you will be able to control any equipment that is connected to the electrical power for the on and off functionality. The operation is via WI-FI local network, so for a good operation leave your router always connected, when the router is disconnected or turned off, the equipment connected with Sonoff automatically turns off.

APP Sonoff Control for PC: http://sonoffcontrol.droppages.com/

Firmware Tasmota
https://www.youtube.com/watch?v=2peHTwzzIQE

Firmware Arduino
https://www.youtube.com/watch?v=mz5DxnL2IaU