deurcontrollers

Deurcontrollers, often referred to in English as door controllers, are electronic devices that manage access control systems for one or more doors. They act as the bridge between credential readers, electric locks, and door sensors, enforcing who may enter and when. A typical deurcontroller processes credential data supplied by readers (such as card, fob, or biometric readers), applies access rules stored locally or retrieved from a central server, and then energizes a lock relay to grant access or keeps the door locked to deny it.

Door controllers monitor door position sensors and request-to-exit devices, detect tampering, and log events for auditing. They may also enforce features such as anti-passback, time zones, and holiday schedules. Many systems offer local storage for an audit trail and can operate offline during network outages, syncing when connectivity is restored.

Hardware and interfaces: standalone controllers used for a single door or networked controllers supporting multiple doors. Common interface protocols include Wiegand (for reader data) and Open Supervised Device Protocol (OSDP). Communication may be via RS-485, TCP/IP, or Power over Ethernet (PoE). Power requirements typically range 12–24 V DC, with some models using locking power supplies and fail-safe or fail-secure operation depending on the door hardware.

Applications: used in commercial buildings, campuses, healthcare facilities, and government properties to provide scalable, auditable access control. Security considerations include regular firmware updates, secure credential management, and physical protection against tampering.