... , support many fingerprint access. Easy operation of function keys.· Operated in night with 16 bits backlight keyboard.· Authentication: UL, CE, FCC, ... -static and anti-jamming protection. All input/output are designed with over-voltage & circuit protection, illegal-dismantle alarm & professional alarm ... Optional: HID/Mifare card, webserver, Wiegand IN, Short message, workcode, printer, Antipass-back