"Smart access controller for 4 doors 1. Supports TCP/IP communication and web interface for management 2. Supports up to 50,000 cards and 100,000 access logs 3. Supports multi-door interlock funtion and anti-pass back function 4. Supports RS-485, Wiegand protocol for accessing card readesr 5. Supports emergency door release(EDR) 6. Supports tamper proof alarm 7. Easy to establish large-scale access control system with Akuvox ACMS 8. Power supply: 100~240VAC 50/60Hz;"