【Only Work with ZOSI PoE Camera】This ZOSI PoE NVR is Only work with ZOSI PoE Camera, such as model: C182, C225, C105, C429, C261 and so on. It does not support third-party cameras. You can add up to 16 pcs ZOSI PoE cameras to this NVR and manage simultaneously easily. If you have any product issues, please feel free to contact us. | 【Easy Setup】This NVR cannot be used independently. You need to match the code when adding ZOSI PoE cameras to your ZOSI NVR system. This 16 channel PoE Network NVR recoder is a replacement for ZOSI PoE NVR Recoder. | 【Perfectly compatible with ZOSI PoE cameras】This ZOSI PoE NVR can integrate human detection, two-way audio and spotlight siren from ZOSI IP cameras. By adding more ZOSI PoE cameras, you can build your own smart home security system. | 【Remote Access and Control】Set up the NVR with the free Zosi Smart App/Client without monthly fees. It allows you to live view or playback on smart devices anytime anywhere you want. And you can also configure the detection zone from your NVR to minimize false alarms. | 【24/7 Recording with 4TB security Grade hard Drive】Equipped with a built-in 4TB security-grade hard drive, this NVR supports 16 cameras recording simultaneously. It can long continuous record and backup via USB. You can choose to automatically overwrite the oldest footage stored internally or transfer the video files to a USB memory stick or external hard drive.