ADC-VDB780B Alarm.Com Wireless Video Doorbell is a battery-powered doorbell with
up to 6 months usage from single charge (rechargeable by Micro USB)
HD video, Video Analytics for rapid people detection, Two-Way Audio, and a
160(H) wide field of view.
completely wireless video doorbell gives you the flexibility to choose the ideal
installation location without relying on the existing wiring or chime
includes VDB780B Doorbell and ADC-W115C Smart Chime.