The Dahua NVR5000-4KS2 network video recorder is designed for IP video surveillance applications, providing excellent performance and high recording quality. It supports 4K resolution processing and can serve as edge storage, central storage, or backup storage. The NVR is easy to install and suitable for various applications such as public safety, transportation, education, and financial institutions. It is compatible with third-party devices, making it an ideal solution for surveillance systems independent of video management systems. The NVR has an open architecture, supports multi-user access, and is compatible with ONVIF 2.4 protocol, allowing interoperability with 4K cameras. Key functions of the NVR include Smart H.265+ video compression, which reduces bit rate and storage requirements by up to 70% compared to standard H.265. It also supports ePoE and EoC technologies, simplifying network structures for long-range surveillance projects and allowing the use of existing coax cables for HD IP surveillance. The NVR is equipped with a smart fan for efficient cooling, adjusting fan speed based on CPU and ambient temperature. It features the DMSS app for remote access, live video viewing, event notifications, and recorded video search from iOS and Android devices. Fisheye dewarping enhances the circular panoramic view by eliminating distortion, and the NVR supports Automatic Number Plate Recognition (ANPR) for entrance/exit management. Additionally, it offers a Point of Sale (POS) solution for analyzing specific transactions in grocery and retail stores.