4K HDR video brings you closer to reality than ever with the finest details captured. See sharp details up to 100ft(30m) revealed by IR LEDs even at Night. This 16-port PoE NVR supports up to 16 cameras directly, but with an additional ZOSI PoE switch (sold separately), you can expand to 32 channels for larger surveillance coverage By adding an ZOSI 8-port PoE switch, you can expand your 16-port NVR to support 24 channels (24CH). By adding an ZOSI 16-port PoE switch, you can expand your 16-port NVR to support 32 channels (32CH). Built-in mic captures high-fidelity audio and offers you critical evidence. Advanced AI algorithms,it can detect person,face and vehicle without any subscription fee. Record 24/7 footage to the built-in 2TB HDD NVR for large local storage & long-lasting security. Review recorded footage with highlighted lines on the timeline that indicate motion events. See what's happening at home, whenever and wherever, with free Zosi Smart App/AVSS Client. As your security life provider, all recorded footage is encrypted on the device to ensure your data transmission is kept private. Encased in a solid aluminum shell, the weather-resistant camera stands fast indoors and outdoors. Compared with H.264 coding, advanced H.265+ saves about 50% bandwidth and storage for longer recording time and a better viewing experience. Specify detection areas, and adjust motion sensitivity level to focus on where to detect the events. Provides up-to-the-moment counts, beneficial for retail stores, shopping malls, and public spaces to optimize staffing and service. 4K PoE Camera *12 Add on Camera 4K PoE Camera *16 4K PoE Camera *16 4K PoE Camera *24 4K PoE Camera *32 ZOSI started in 2012, is an industry-leading company in security cameras and security-centric solutions. Today we have millions of customers across more than 60 countries and regions. We provide after-sales support and services to all of our customers around the world. With product design, R&D, manufacturing, sales, and service in one, ZOSI is committed to bringing our customers 24/7 all-round protection anywhere.