The enclosed material (2 clips with screws) I have not used. Since the lights are very light, enough double-sided tape or 2 small blobs with the hot glue gun.
There is no extra power supply needed. The lamps can be very good and unobtrusive in series. The switch is only for the respective lamp. All coupled to stay unchanged or off. This is not thought out, but I do not care, because I use a normal light switch on the wall.
There are no single points of light visible LEDs. The light color is very pleasant and not so cold.
The manufacturer's logo is a bit disturbing and I consider him to cover it with white tape ...
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If the lights keep for a long time now, I'm totally satisfied.
I would buy me at any time.