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I recently moved into a nice prewar apartment with a good old fashioned apartment buzzer which im trying to hook up into an Arduino in order to buzz people (UPS, Laundry, Myself) into the lobby when I'm not in the apartment. The buzzer's board looks as follows
and the "manual" i found online which seems to match (Note the matching ABCDX on the board)
My only question is which wire is the incoming "entry request" buzz, and which wire is the outgoing "allow inside" buzz. Anybody every work on installing/fixing these systems and know?
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- 5 years ago
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