Sonoff is a cost effective, smart home solution which is designed and produced by ITEAD. It is a low-cost solution that helps you to step into the amazing smart home. Sonoff smart home series are based on WiFi that can connect to appliances of different types and brands. Sonoff transmits data to a cloud platform through the WiFi router, which enables customers to remotely control all the connected appliances, via the iOS/ Android mobile application eWeLink. eWeLink server is Amazon AWS global server.