[4K Ultra HD and Color Night Vision]Capture stunning details with our 4K CMOS image sensor that improves color, contrast, and low-light performance. Experience enhanced visibility and clarity with high resolution and the ability to zoom in digitally without losing quality. Elevate your surveillance with advanced technology. | [Face/Person/Vehicle Detection with Push Alerts]Our AI-powered detection feature intelligently identifies faces, people, vehicles, and other objects, reducing unnecessary notifications. Receive instant push alerts and email notifications whenever motion events are detected. Stay informed and on top of any activity with our advanced detection technology. | [4K 16-Channel NVR Upgrade to 24CH Expandable]Easily expand your 4K 16-channel NVR system to a 24-channel system with our expandable solution. Add a PoE switch (not included) to support up to 24 PoE cameras. Enjoy the flexibility to add more cameras, including (ZOSI only) 8MP, 5MP, 4MP, 3MP, or 2MP PoE cameras, to enhance your surveillance. | [Two-Way Audio & Remote Access]Communicate in real-time with your family, colleagues, or visitors through our product equipped with a built-in microphone and speaker. Use our free mobile app to have conversations, share camera views with your family, and access and playback recordings remotely anytime, anywhere. | [Dual-Disk Backup for 24/7 Recording]Benefit from extended continuous recording and USB backup with our dual hard drive design. Support up to two 6TB hard drives (not included). With a built-in 4TB secure-grade hard drive, rely on our NVR for reliable all-day recording. Set the NVR to automatically overwrite old footage or transfer video files to a USB thumb drive or external hard drive via USB.