DCU2000 64 Doors Anti-tail Interlock Access Control System is made up of software of management center, controllers, door modules, readers or fingerprint scanners, magnetic contacts, open door buttons, locks and alarms. One management center will connect several 485 buses with each having 16 controllers connected but unlimited by TCP/IP, each controller will connect and control 64 doors. There are Bidirection doors control, Anti-tail interlock, 8 anti-latency zones setup, RF card and password open, Access group, keypad and card armed/disarmed, schedule and holiday control, Normal open, alarm for Overtime Open, Abnormal Open, Five Times Error Swiping, Tamper, Latency, duress