Balcom WS 20 with Nuki Opener

[LT_Berlin (Chris L-T)]

I have this Intercom from Balcom, type WS 20 and Im trying to install nuki opener with it.

There was a discussion about this same topic in 07/2022, but it seems to have run stale…

!HELP! Balcom WS 20 with Nuki Opener

Hello everyone, I have this Intercom from Balcom, type WS 20 and Im trying to install nuki opener with it. After some trial and error I still not able to open the front door, both by App or by ringing my apartment. Here is what I found so far 1 ring the front door as it opens 2 i guess this is the opener 3 speak/listen 4 ring the intercom when the button on the front door pressed 5 ??? While I managed to connect the yellow and green cable from the opener correctly,I still dont know where …

So I’m trying to find an anwer here.

Obviously - the cable connections are fixed, but what I need to know is
“What make and model did you use (in the Nuki App) as the Intercom?
The WS 20 apparently does not exist…”

Thanks for your help!