Reolink 8CH NVR 4K PoE Security System Smart AI Detection Audio 2TB RLK8-820D4-A
(not included). Power, video, and audio run through one single PoE cable, making the installation simple. Flawless Video in 4K Ultra HD. Storage SATA 1 SATA Interface (2TB HDD Included) Maximum Capacity 12TB (up to 6TB Capacity for Each HDD).