If there is no wired in-home chime, verify that the power source (AC or DC) meets the product requirements, and
wire directly (polarity does not matter) to the ADC-VDB750 (no in-line resistor is required).
Important: The Power Module should not be used with mechanical chimes. If a mechanical chime is humming or
ringing unexpectedly after the ADC-VDB750 is installed, the included resistor should be used. To install, connect
one wire lead of the resistor to each of the chime terminals, leaving the existing wires in place. Polarity does not
matter.
https://answers.alarm.com/Partner/Installation_and_Troubleshooting/Video_Devices/Alarm.com_Video_Doorbell_(ADC-VDB7…
Updated: Thu, 08 Jun 2023 16:11:26 GMT
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