【4K PoE / IP NVR w/wide compatibility】The PoE NVR is compatible with Hiseeu PoE camera, support resolution up to 4K/2K/8MP/5MP/3MP/1080P IP cameras, but limited compatibility with the third-party cameras | 【16CH Expandable PoE NVR】Built-in 8 PoE ports, but can power on 16 PoE cameras at the same time over Ethernet cable via a PoE switch(not included) to expand 16 hannels.(PoE switch ASIN:B09LH7P41X) | 【Easy Remote Access & No Monthly Fee 】 Free APP "Guard Viewer" can be downloaded from APP Store or Google Play. View the live video remotely via phone APP or "Guard Station" on PC/Mac/Tablet at any time anywhere | 【Human & Vehicle Detection】You will have colored boxes surrounding humans and vehicles. A green box will outline pedestrians with an intelligent mark enabled in the camera, and a blue box for motor vehicles. With the Human and Vehicle Detection feature, you could be alerted any time when a person or vehicle entered your property （ Important Notes: Only Hiseeu PoE camera can support these functions） | 【Instant Motion Alerts on Customized area】The user can randomly customize the detection area, once the system detects some suspicious moving objects, smart alerts on the App, Email, and NVR will be triggered instantly through the APP or Email | 【No Hard Drive included】This NVR unit doesn't come with a hard disk, but supports up to 12TB HDD.NVR can’t record playback videos without an HDD. (HDD ASIN:B07DW4YGYM) | 【Advanced H.265+ Video Compression】Advanced H.265+ technology can efficiently save hard drive storage up to 50%, for delivering sharper and smoother video streaming (No Hard Drive Included)