Nuki Opener makes the doorbell on the appartment door quite - Questions - Nuki Developers

Hi, I installed a Nuki Opener successful at my home. It works fine for the door bell of the house door (ground floor). But the door bell in the third floor is not working anymore. What is wrong? I attached photos with the wiring and the intercom model. Thanks for your help! Jan

Nuki Opener - Smarten up your intercom.

Nuki Smart Lock for your apartment – your smart access solution - Nuki

Nuki Opener with Siedle HTV 840 - Questions - Nuki Developers

Use two Nuki Opener on the same intercom/Nuki Bridge - Questions - Nuki Developers

Elcom i2 Bus (BVM-100) - Nuki Opener Beta - Nuki Developers

Elcom i2 Bus (BVM-100) - #97 by Mr_K - Nuki Opener Beta - Nuki Developers

Nuki Opener Combo in test - how well does the smart door opener work?

Looking to make apartment door buzzer smart : r/HomeKit

Nuki Opener Terraneo Intercom detecting Button and Ring but doesnt open - Nuki Opener Beta - Nuki Developers

How to maintain your property from afar while ensuring an outstanding guest experience - Nuki