(Model: RLK16-820D8-A) Flawless Video in 4K Ultra HD, Person/Vehicle Detection, Power over Ethernet, With 8-Channel NVR, 3TB HDD Built-in, Unfailing 24/7 Recording, Quick Search in Playback, Audio recording, 87° Viewing Angle, 100ft Night Vision, IP66 Waterproof, Motion Alerts (push notifications, emails, or buzzer alarm in the NVR), Multi-Cam Live Feed, Record Scheduling, Motion Zone, Work ...