The coupling is so easy: the app is downloaded via a QR code that you can scan and then presses a button on tap and in less than 10 seconds is set. (The manual is in English but hey it's so intuitive ...).
The finishes are clean and the product is treated. In addition we can connect multiple and control them from the app. Not bad this remote control principle to light a lamp in his absence and to believe a human presence.
The app provides a simple on / off switch or a timer, you can also do a countdown (I think to use it on the pc of my son used to control the time even though it's a bit brutal for pc). Programming is done for the week so 7 days. You can program 10 different programs.
In conclusion a good automation tool;)