... screen 4. backup battery option 5. software, adaptor free Large Screen Facial and Mifare Card Recognition HF-FR401Features:1.ergonomic ... , simple and stylish interface 3.used six function keys can be user-defined4.infrared optical system, adaptable to the ... switch out, Wiegand output), matching a professional access control functions can be optional12.Other optional functions: GPRS, serial print, Mifare ...