1 HD Video Calls Clear vision of the visitor with audio and video. 2 Reply from mobile from anywhere Control and follow-up via the Hik-Connect application. 3 Open the door remotely Ability to open the door directly from the mobile or the internal screen. 4 Infrared night vision See the visitor even in the dark. 5 Instant alerts when the doorbell is pressed Direct notification on the phone when there is a visitor. 6 Possibility of linking with security systems Integrates with surveillance cameras and the home network.