Sonoff smart switch is a household switch which can support Wi-Fi communication with your smartphone from long distance.
Home automation is "The Internet of Things". It simply means the way all devices or appliances are networked together to provide users with a seamless control over their home equipment.
Sonoff RF is a household switch which can support Wi-Fi communication with your smartphone from long distance. The Wi-Fi electrical switch transmits data to a cloud platform through the Wi-Fi Router. Users can control the connected appliances remotely var a mobile application - eWeLink. The server of the Sonoff Wi-Fi switch is Amazon AWS global server. As a matter of fact, users around the world can use this smart switch.