The Z8504NER is a Network Video Recorder (NVR) designed for smaller security camera systems: Records good quality video (5MP) from 4 or 8 cameras. While not 4K, 5MP resolution offers sharp images for most security needs. H.265+ encoding saves storage space compared to older formats, allowing you to record for longer durations. Supports up to 1080P output: View live or recorded footage on a standard HD monitor. Remote access: Monitor your cameras from anywhere with an internet connection using a mobile app (iOS/Android) or web browser (multi-browser compatible). ONVIF compatibility: Works with a wide range of security camera brands for easy setup. Cloud and P2P options (check model specifics): Store footage remotely and access it easily. In essence, the Z8504NER is a user-friendly NVR ideal for smaller security setups that prioritize good video quality, efficient storage, and remote access for basic monitoring.