Synology NVR DVA3221 is an on-premises 4-bay desktop NVR solution that integrates Synology's deep learning-based algorithms to provide a fast, smart, and accurate video surveillance solution. Built-in support for push notifications keeps users informed of possible intrusions, while the automated video surveillance system helps safeguard properties by detecting people, vehicles, and anonymous objects in designated areas.Facial Recognition, People & Vehicle Detection, People Counting and Intrusion Detection. The DVA3221 unit comes with 8 camera licenses and a 3 year warranty.