Electra with nuki opener

Hello. This is generic analogue intercom. Do you have ideea what is color of opener corect?

It is necesary for activation open- press button talk and then press button acces. I don’t now how work nuki opener and what wire is necesary. Please help me !

This is old but since there is no answer and I am running into the same problem (not yet, so I can’t test).

What I found is that there is a Romanian guy who made it work with an arduino.
He explains it somehow and he sells those programmed arduinos.
https://simpalean.site/interfon/#nuki

At a different site he writes that it works with:
ELECTRA IA01, ELECTRA IA02, ELECTRA PAS 17A, CIM.15.PAS, CIM.170.PAS, EMS.170.PAS

I don’t know if he would share the code.

Or does someone know if this is possible without (or knows a different solution) by now?