4 times the resolution of 1080p. this ultra hd 4k cmos image sensor of camera can capture more light and improves color， contrast， and low-light performance， you're able to digitally zoom into far away objects without losing any quality

Ai person vehicle detection and alert push， 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/or sound alarms (siren) when motion events are detected

Cameras are built-in mic and speaker and let you stay in touch with your household with the free ZOSI smart app， you can control the cameras for its ultra bright spotlight and sound siren to scare intruders away automatically or manually

Simple PoE connection makes it easier to set up and install your home security camera system， unlike the CCTV DVR systems， videos from the IP camera system will not be degraded or destroyed by cables， the digital signal will keep a real 8MP high-definition image via ethernet cables

Built-in 4tb security grade hard drive， you are provided reliable 24/7 continuous recording. nvr can be set to automatically overwrite the oldest internally stored footage or you can transfer those video files by usb to a memory stick or external hard drive