I recently moved into an apartment, and thankfully, it doesn’t have a 2-wire intercom system as the previous. However, the existing intercom is quite old. It has an “A/M” logo and the marking “RIF. 630/2”. I’m guessing “RIF” stands for “Riferimento” (Reference in Italian as this is where I am). I found a mention online of a 1972 Urmet 630/2, but the post is private, so I can’t access the details.
Here’s a picture of the inside of the intercom. I’d like to connect it to my Nuki Opener, but the wiring colors don’t seem to match the standard configurations. There are two separate door that open in sequence, each with its own panel next to the respective door. The intercom opens whichever door’s button was pressed last. Also, I can’t seem to find a way to cut power to the intercom at my main switch, as it appears to be connected directly to the building’s main power supply. Any advice on how to connect the Opener without risk? I suppose it’s low voltage, but still I know little of these things and want to be on the safe side.
