The VACC-DB-A from Alarm.com is a Digital Doorbell Adapter and is required for all digital chimes to work with the SkyBell Doorbell Camera. The primary function of a DDA is to regulate the power going to the digital speaker throughout the duration of the chime.
The DDA is installed in the middle of the chime's curcuit. Connec the DDA to the chime prior to installing the Doorbell Camera.
