Eight-Door Ultra Access Controller. The Access Control System is divided into 2 Parts: Access Controller (DS-K2704X) and 2 Access Modules (DS-K2M002X). The System supports 100000 Users, 10000 Fingerprint, 200000 Cards, 600000 Events. Supports 8 Door Control. Downstream RS-485 Redundancy Wiring Design to ensure Communication Stability. Web Configuration Management. 1× Network, 8× Lock Control, 8× Exit Button, 8× Door Contact Input, 16/8 Alarm IO, 1× Tamper, 15× RS-485, 8× Wiegand (standard 26/34 Input), 1× USB 2.0, 1× Fire Alarm, 100~240 VAC Power Supply. Supports 12 VDC / 7 Ah Backup Battery. Wall Mounting Installation.