A video door phone is an advanced security system that allows homeowners and businesses to monitor and communicate with visitors before granting access. It consists of an outdoor camera unit, an indoor display monitor, and an intercom system for two-way communication. Modern video door phones come with features like night vision, motion detection, mobile app integration, and remote access, enhancing security and convenience. These systems help prevent unauthorized entry, improve surveillance, and provide real-time monitoring of the entrance. With wired and wireless options available, video door phones are an effective solution for residential apartments, villas, offices, and commercial spaces.