Compare proximity credentials at 125 kHz, high-frequency credentials at 13.56 MHz, Bluetooth Low Energy (BLE) mobile credentials, and keypad entry using a personal identification number (PIN). Consider the credentials your site already uses, whether you plan to migrate to higher-security or mobile credentials, and whether PIN access fits the access policy, while also checking support for OSDP or Wiegand connectivity.

Red mullion readers connect to compatible access control controllers through OSDP, which supports secure communication and multi-drop wiring so multiple readers can share one cable run. Select versions also support Wiegand, providing a connection option for systems that use that reader interface.

Installers should confirm that the narrow mullion form factor fits the available mounting surface, leaves room for the door and trim to operate, and allows access for wiring and service. They should also plan the reader’s credential method, such as proximity, 13.56 MHz high-security credentials, Bluetooth Low Energy, or a PIN keypad, and verify the access control system supports the selected OSDP or Wiegand connection.

Red mullion readers can support a phased migration by combining 125 kHz proximity credentials with 13.56 MHz high-security credentials and Bluetooth Low Energy (BLE) mobile access, allowing sites to introduce newer methods while continuing to use compatible legacy credentials. Models with keypad functionality can also add PIN entry, while OSDP connectivity supports integration into a modern access control system.