Thanks for that sparkymarka.
So theoretically, if I had a relay interface, when some one calls the flat, that will trigger the relay, which can then control any thing electrical.
Hopefully a signal to a device that can let me send a notification to my moble. But that’s work in progress.
Then if you think 5 and 9 joined will trigger the door release. Hopefully I can open the door.
Just need to test the door release on those terminals. Although I hope it doesn’t go wrong. Eeeeek.
Thanks again.