[4K Ultra HD & Color Night Vision ]- Experience stunning 4K resolution with an advanced CMOS sensor that captures more light for vibrant colors, sharper contrast, and superior low-light performance. 8MP Ultra HD lets you digitally zoom without blurring—perfect for identifying faces or distant objects. Color Night Vision ensures full-color footage even in darkness, so you never miss a detail. [Face/Person/Vehicle Detection with Push Alerts]- AI-Powered Smart Alerts,Fewer False Alerts, More Security.Our AI detection (human/vehicle/face) filters out irrelevant motions like leaves or animals, sending real-time push alerts only for critical events. Customize zones and sensitivity via the app to reduce spam notifications. Get email alerts or check 24/7 recorded clips instantly—ideal for homes, offices, or warehouses. [Two-Way Talk & Remote Monitoring – Stay Connected Anywhere]- Talk and listen in real-time through the built-in mic & speaker—scare off intruders or greet guests via the free app. Share camera access with family or colleagues for multi-user viewing. Stream 4K live footage or playback recordings remotely from your phone, anytime. [16 Poe Ports,Expandable to 32CH System]- Start with a 16-channel 4K NVR and expand to 32 cameras by adding a PoE switch (supports ZOSI 8MP/5MP PoE cameras). Ideal for large properties or businesses needing scalable coverage. Plug-and-play setup with PoE cables (included) for easy installation—no extra wiring hassle. [No Monthly Fees,4TB Hard Drive for Local Storage]- Includes a pre-installed 4TB surveillance-grade HDD (no risk of cloud hacking). Auto-overwrite or backup to USB ensures evidence is always saved. Zero monthly fees—100% local storage.Our dual hard drive design supports extended continuous recording. It can accommodate up to two 8TB hard drives (not included).