Multiple identifications: Fingerprint, Password and card, 500 Dip hidden fingerprint sensor for dry fingerprint and strong sunshine. Standard TCP/IP, RS485, USB for communication with computers and servers together. Realtime attendance Monitoring with software management and access control. Lighted keypad for easier operation and use at night. Two doors interlock function: A door opens, B door closed. Professional access control, Tamper alarm, duress alarm, door open alarm, Wiegand input and output, door magnetic detection, anti-pass back, interlock, fire linkage and other professional access control functions.