This outlet is very convenient. Intermediate between a device and the initial decision, it can cut or not the power supply to the connected device.
How to use it? Once connected (red light should flash frantically), one must also, for iPhone owners (for Android, you need a code scanner), download an application. It identifies the wireless network, the password is given, click on "Settings" and after 40 seconds, the application identifies the socket and can control the outlet.
Just have to click "on" or "off" on the application, it allows to cut the power or not.