Keri Systems NXT-4D-MSC 4-Door Mercury-Powered Access Control System

TCP/IP-based access control controller with embedded firmware delivering enterprise-grade capabilities for sophisticated security applications. Supports up to 100,000 cardholders and 50,000 event buffer capacity. Features include Wiegand format builder, credential types library, and OSDP reader support. Expandable 4x4 I/O configuration with offline operation capability. Available in 2-door and 4-door versions. One-button auto-configuration via embedded MAC address. Elevator control option available for integrated building access management.