HDView (Business Series) H.265 HD 32 Channel Megapixel NVR, 4K HDMI, Up To 8MP IP Camera, ONVIF Compatible, VCA Intelligent Analytics Please buy SAME Series of IP camera and NVR, because it's Private Connection. More stable than ONVIF connection. Intelligent Analytics feature only work with HDView Business Series IP Cameras 32 Channel NVR, 16 POE Ports, Support 8MP/5M/4M/3M/2M/1.3M IP Cameras, Real Time Recording, 4K HDMI Video Output Advanced Mobile Phone App, No Hard Drive Installed (Support 4 hard drives [6TB each], or 4 hard drive and 1 DVD burner) Intelligent Analytics: Object Detection, Exception, Tripwire, Intrusion H.265 / H.264 Video Compression Technology, Latest ONVIF Compatible: Recommend HDView, Hikvision and Dahua branded IP Cameras