S20 smart socket is a cost effective smart home solution. Smart socket is a WiFi wireless socket that can connect to appliance of different types and brands.
Users can instantly convert any plug into a smart outlet with a convenient timer function that works on user's smart phone. You can turn on/off any connected device either on the APP eWeLink or by pressing the manual control knob. This makes it perfect to control lighting and other home appliances.
The mobile application eWeLink enables you to control all your smart devices from anywhere at any time. The iOS version of the application can be downloaded in App Store while the Android version in Google Play.
Hackable for Advanced Users
The SONOFF devices are based on the ESP8266 processor that is supported by the Arduino IDE. In order to reprogram the ESP8266 a USB-Serial converter is required. There are now many projects and tutorials that show how the re-write the firmware.
One firmware that is very flexible and has good support is the Sonoff-Tasmota project.