Ah okay, I also tried several “configurations” but without result, and I do not have enough knowledge of electronics.
Here is the link to the support page I was talking about:
https://support.nuki.io/hc/fr/articles/6029167927825-Je-ne-peux-ouvrir-ma-porte-d-entrée-que-si-la-sonnette-a-été-préalablement-actionnée-Est-ce-que-je-peux-quand-même-utiliser-le-Nuki-Opener-
It’s in French…
But I also read an answer from a Nuki member “Georg S” saying this in another thread for 2Voice system Urmet:
What do you think ?