I have an old Ritto 6132 intercom. I managed so far to get to get the door to open, there are only two terminals connected (connect blue and violet.
I can’t get the ring detection to work properly though. As soon as I connect the bell and configure the opener, the door constantly opens, so I guess a ring is detected all the time.
How I wired things: I connect black and violet to the ground of the opener. I checked and this ground is shared with the bell. So from what I read, I connected green to GND of the bell, and yellow back to bells now open terminal. I made a crude diagram for better understanding, see below.
I measured the voltage coming supplied to the bell (disconnected wires from the bell). Without ringing, I have a constant 2.3V AC. When I ring, there’s a short spike of 10.1V AC (shorter than the button press actually).
Is the constant 2.3V AC the problem here? Or any other ideas how to fix this?