
The SIEGENIA card reader uses RFID technology (e.g., MIFARE DesFire EV1/EV2) to detect contactless cards (or similar credentials) and grant access. When a user holds the card near the reader, the system reads the identification data and allows entry for authorized persons.

The card reader communicates directly with the door drive via the digital SI-BUS line, without requiring an additional control unit. Wi-Fi and Bluetooth support come as standard, and user management and remote control are easily handled via the SIEGENIA Comfort App.
The system offers flexible security and management through features such as user definitions, time schedules, and different authorization levels.
The SI-BUS line uses encrypted communication (128-bit AES), ensuring data security.