Power, for which he is exactly that meant.

I was initially a bit skeptical because of the low price. But all doubts were removed after trying.
About an accompanying bar code (both for Android and Apple), I could load the App comfortably on my phone. The app shows when you first configure an immediate instructions on how to integrate the controller into Wifi. That was done even after a few seconds.

When Appstart is first scanned shortly after the controller in wireless. This usually takes 1-2 seconds. Then you can freely select the color, brightness and so on.
The app is very easy to use and has some special features (which I do not need, however, for example, music control).

The cable to connect was also a breeze. With a matching transformer I have connected the controller to the ceiling lamp power cord. The controller thus depends on me from the ceiling (fixture on the controller available) and falls due to its simple design not on, and can be started or turned on the light switch. Since the last selected setting is retained even after the current separation is not a problem.