Single-Door Ultra Access Controller, supports 100000 Users, 10000 Fingerprint, 200000 Cards, 600000 Events, supports 1 Door Control. It can extend up to 62 DS-K2M002X Access Modules, and up to 126 Doors can be controlled. Downstream RS-485 Redundancy Wiring Design to ensure Communication Stability. Web Configuration Management. 1× Network, 1× Lock Control, 1× Exit Button, 1× Door Contact Input, 2/2 Alarm IO, 1× Tamper, 7× RS-485, 2× 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.