Hi all,
Im wondering if someone can help me out with the last steps to make my old apartment intercom smart. My apartment has an “Siedle HT-511 01” intercom system (see attached pictures)
Im trying to make the system smart with a Shelly Uni or Shelly one. The system get 11V AC when the doorbell rings. The only challenge I have is that there is no external power possibility around.
I figured out the cable installation already, which should be:
-C an I to “measure doorbell ring”
-C and 7 to “buzzer door”
Is there any one that could possibly help me out here with knowing if its possible to connect a Shelly one to the existing power supply / cabling. If yes, which cables could it be?
Would love to hear your thoughts.
If there are any other suggestions, please feel free to share. Looking for the best suitable solution here.
Thanks!