Hikvision 4K DS-7732NXI-K4 32CH 4K H.265+ 4 SATA 12MP NVR Network Video Recorder | eBay
User manual Hikvision DS-7716NI-K4 (English - 97 pages)
Amazon.com : DS-7616NI-Q2/16P H.265 16 Channel PoE 4K 8MP Network Video Recorder NVR, Plug & Play, International Original English Version, Compatible with Hik Vision Hik-Connect, Hard Drive Not Included : Electronics
How to Connect Hikvision IP Cameras to an NVR
How to set up remote viewing on Hikvision DVR/NVR (Latest Firmware 2018) - YouTube