The DoorBird D1812B is an IP video door station designed for single‑family homes and commercial sites, offering a versatile solution that operates as a stand‑alone intercom or as a replacement or upgrade for existing DoorKing® 1812 installations. The system delivers high‑definition video with an ultra‑wide 180‑degree hemispheric lens, integrated infrared LEDs for night vision, and two‑way audio communication, enabling users to see and speak with visitors remotely via the DoorBird app. Connectivity is provided through Ethernet with PoE support, while integrated features such as a 4D motion sensor, RFID access control, keypad functionality, and configurable relays allow for secure door and gate operation with flexible access schedules. Designed and manufactured in Germany, the D1812B supports open API integration with smart home and third‑party systems, making it a robust and scalable smart entry solution for modern IP‑based access control environments.