The voltage should be 12 volts DC. I don't know which terminals are live or
ground though. You can tape over the bear wires to the point you only have a
bit more than the hook at the ends. Then have someone work the door bell, or
tape a couple coins to the button to keep it live. Then you can make the
individual contacts and see which way works.
----- Original Message -----
From: Art Rizzino
To: blindhandyman@yahoogroups.com
Sent: Monday, May 03, 2010 8:32 PM
Subject: [BlindHandyMan] Diagnosing a doorbell
I would like guidance diagnosing my house two door doorbell setup. The wiring
always looked shaky to me. Today I was coming down out of the attic and my
shirt got caught on the door bell wires and pulled them apart. Well I guess
this is the time to figure out the system and make better connections than
twisting wires together and let exposed bear wires dangle. This is how it was
when we bought the house.
The front door you hear two tones and the side door there is one tone.
I assume each door's button should have two wires coming from it.
The doorbell box has four wires in two pairs of two wires. There are three
terminals in the doorbell box, the center terminal has two wires one from each
set. What is the center terminal, negative or positive?
What might be the voltage required to activate one of the doorbells?
There is what I assume is an AC to DC transformer included in the system.
This little box only has two terminals on it, is this a typically a steady DC
voltage supply?
What might be the correct way to connect the wires for such a system?
Ideas, guidance and suggestions welcome.
Thanks.
Art
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