I received my Smart Lock Pro (4th Gen) CH Cylinder (Smartphone) 2 days after placing the order. The installation of the Nuki on the Kaba door and cylinder took me about 20 minutes and the application about 30 minutes. Everything was included in the box. Perfect!

Keso with knob adapter worked for me

Brrrain: In Switzerland, we mainly use the CH cylinder, simply circular.

Hello!
A key is inserted and the Nuki is placed on top (the Nuki has a recess where the key is inserted).
The Nuki serves as a motor/drive via the key. You can also use the ring to open or close it by hand (manually).
We had to have a new cylinder as the door could no longer have been opened from the outside (if the Nuki failed) if the key was inserted (cylinder with emergency function).
You can test this: with the key inserted from the inside, you should be able to open the door from the outside with the key.