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The problem was that I thought that it was a 4 wire system. But it's a 2 wire system with loop wiring. So I wired the two reds together, the two blacks together and I got 12VDC all the time and 12VAC when someone pushes the button at the entry.
I used a 12VDC buzzer and wired it reversely. It...
After a lot of research, I have some more information.
There are 4 wires at my apartment's intercom box:
- Wire 1 is the conductor for the door striker. When I connect this to the ground, the entry door opens. This runs 11-12 VDC.
- Wire 2 is the ground.
- Wire 3 is the signal wire. When...
Thanks for replying.
There are 6 buttons downstairs, one for each apartment. When a visitor pushes the button marked 202, the buzzer should sound just at my apartment.
I think that the second of wires is for the voice because the voltages are really strange (11 mv, 30, 33, -10, -15). It's...
Hi everyone.
I live in a Condo that has a Mircom K series intercom for 8 apartments. The voice is not working, so I decided to removed that old big phone from the wall an install some custom piece of plastic to open the door and buzz. The problem is that during the process I broke the PCB and...
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