Sonoff SV(safe voltage) is a low power supply wifi switch, using Android/iOS APP named eWeLink.
Sonoff makes all your home appliances smart. As long as your phone has network you can remotely turn on or turn off your appliances from anywhere at any time.
Sonoff SV has GIPO reserved to support secondary development. This version does not have 433 RF function and without shell.
Support setting max 8 single or repeat timing tasks each device
For documentation, please click, http://wiki.iteadstudio.com/Sonoff_SV