Person or Vehicle Detection Combining 5MP Super HD high resolution, up to 30 frames per second and H.264 video coding technology, the cameras deliver super clear and smooth live streaming. With the built-in microphone, they also pick up ambient sound for an extra layer of security. The cameras of the kit cannot work without the NVR. This dome security camera system features PoE (Power over Ethernet) tech, with only one cable connecting each IP camera to the NVR for both power supply and video signal transmission. With the 2TB HDD and up to 8TB of storage capacity, the PoE video surveillance camera system supports all cameras to record continuously at the same time. Access Your Camera, Anywhere and Anytime via Reolink App or Client. This security camera system can be expanded up to 8-camera kit with Reolink IP cameras*For best compatibility, Reolink cameras are recommended to use with Reolink NVR. IP66 Waterproof Certified