Not every front door has usable doorbell wiring. This plug-in supply powers an ADC-VDB750 or ADC-VDB770 directly at 16V and 1.25A, so a house with no existing circuit, a dead transformer, or wiring that fails the voltage test still gets a doorbell camera without opening walls.
Built for the installer
It takes the transformer question off the table entirely. No VA budget to calculate, no resistor selection, no testing a forty-year-old circuit under load. On a retrofit where the existing wiring is the unknown, this converts a maybe into a predictable install.
Alarm.com also bundles this supply with a 10 watt 10 ohm resistor as the ADC-VDBA-PSU-DCR, which is the part to specify when the installation still involves a chime circuit that needs the resistor.
Key features
- Removes the transformer from the job, so bad or absent doorbell wiring stops being a blocker
- Rated 16V, 1.25A (20W) to the published requirement for the supported doorbells
- Works with the ADC-VDB750 and ADC-VDB770 where the existing chime circuit is unusable
- Available bundled with a 10W 10-ohm resistor as ADC-VDBA-PSU-DCR when a chime circuit is involved
System requirements
For use with the Alarm.com ADC-VDB750 and ADC-VDB770 video doorbells. Requires a mains outlet within reach of the doorbell location.
Which doorbells does this power supply work with?
When should this be used instead of a transformer?
Is the resistor included?
Product Guide
