[4K Ultra HD and Color Night Vision] 4K Ultra HD CMOS Image Sensor allows the camera to capture more light, which improves color, contrast and low-light performance. It can record everything with sharper details with the high pixel count and be able to digitally zoom into far away objects without losing any quality in 4K resolution. [Person Vehicle Detection& Smart Alerts] Precisely Detect Person Vehicle, the camera is smart enough to detect people or vehicles from other objects and safely reduce unwanted notifications. You will receive instant App push notifications, email alerts and sound alarms (siren) when motion events are detected. [Two Way Audio & Remote Access] The PoE camera Built-in mic and speaker let you stay in touch with your household. So you can talk to your kids or tell your dog to stop barking, or say hello to the delivery man through the Free Zosi Smart App. Free app for live view & Playback anywhere anytime. [8 Ports NVR Upgrade 16CH Expandable] This 4K 8-por