TCS Door Phone Integration

Has anyone integrated the TCS Door Phone with HA to answer calls and triggering relays to lock/unlock doors?

Any lead on this would be of great help, thanks.


It seems to be possible to control the protocol with an Arduino Nano. See the sketches on Github:

Just in case anyone is still looking for a TCS solution, here’s something that could be interesting for you:

It’s made for TCS / Koch Intercom Bus Communication but also supports older analogue intercoms.