This 16CH NVR supports 4K Ultra HD live viewing and recording, can play and insert 16 Dome cameras at the same time. Power and video signals are transmitted through network cables. It eliminates the need to install cables and simplifies installation. The built-in microphone picks up the audio clearly even from 20 ft away, enhancing the security coverage & the ability to interpret intrusion events. Featuring advanced H.265 compression, which allows you to save up to 50% more storage space and pre-install 4TB HDD for 7/24 recording. This 5MP high resolution Camera equipped with 2.8mm lens, which will provide you with a super-wide 108° viewing angle and allow you to get clearer details. IR range up to 98ft, help you capture clear pictures;Metal housing enables the camera to withstand temperatures ranging from -22°F~140°F. You can access remotely from your phone, iPad or PC via the free APP-Hik Connect or Guarding Vision and receive email alerts and APP push messages.