Question about Nuki Smart Lock Pro (4th Gen) CH cylinder

Yes.
But please note: the cylinder should be able to be opened from the outside with another key in an emergency, despite the key being inserted (inside the Nuki).
Unfortunately, this didn't work for us and we have to buy a cylinder that can do this. Because if the Nuki no longer works and the key is inserted, the door cannot be opened from the outside.

Yes, it is easy to put on and fix with three Allen screws. Alternatively, fix to the door with double-sided adhesive. Everything is included in the scope of delivery. Have fun.