Dahua 64 channel 4K NVR DHI-NVR5864-4KS2 

• DHI-NVR5864-4KS2  network video recorder delivers excellent performance and high recording quality that is ideally suitable for IP video surveillance applications.
• This professional NVR adopts powerful processor, providing the capability of 4K resolution processing for applications where image details are highly required.
• The Dahua DHI-NVR5864-4KS2  is compatible with numerous third-party devices, which make it the perfect solution for surveillance systems that work independently of video management system
• It is equipped with a smart fan to achieve high cooling efficiency. It automatically adjusts fan speed according to CPU and ambient temperature
• features Fisheye dewarping that solves the problem of distortion in the circular panoramic view
• Automatic Network Replenishment (ANR) Technology function automatically store video data on an IP camera SD card when the network is disconnected.