Hikvision Video Door Phone is a home security system that allows users to see and communicate with visitors at their front door using a video intercom system. It includes a camera mounted at the front door and a monitor installed inside the house. Hikvision Video Door Phone captures high-quality video and audio of visitors, which is displayed on the indoor monitor. The monitor features a high-resolution color screen that allows users to see the visitor clearly, even in low light conditions. The system also has a built-in microphone and speaker, allowing users to communicate with visitors without opening the door.