Keri Systems NXT-4D-MSCNE 4-Door, 8-Reader NXT Controller with Mercury Firmware without Enclosure, Door Access Control System

For organizations that need enterprise-level access control without complexity, the Keri Systems NXT-4D-MSCNE delivers a scalable, networked solution built for security, surveillance and monitoring applications. This 4-door, 8-reader NXT controller ships with Mercury firmware embedded, giving you advanced feature sets for customized access rules, credential management and robust event handling. With on-board TCP/IP connectivity and Keri’s one-button auto-configuration, deployments are faster and cabling costs are reduced by leveraging existing LAN/WAN or CAT-5/6 infrastructure. The controller is designed to keep doors secure even if the network goes offline, and supports modern reader standards like OSDP plus multiple credential formats for interoperable installations. Re-assignable I/O and optional 4x4 expansion boards enable elevator logic and additional monitoring inputs without hardware replacement. Ideal for enterprise, campus, healthcare and multi-site installations, the NXT-4D-MSCNE pairs with Doors.NET or other Mercury-based platforms to centralize surveillance, audit trails and alarm monitoring. Configure it as a standalone controller or as part of a large access control ecosystem — contact us to discuss how it fits your security architecture or to request a quote.

• Enterprise-grade Mercury firmware embedded for advanced customization and centralized security management
• 4-door / 8-reader design with on-board TCP/IP reduces wiring costs and simplifies deployment across LAN/WAN
• Intelligent offline operation and large capacity for cardholder databases and event buffering to maintain security during network outages
• Supports OSDP and multiple credential formats for future-proofed reader integrations and higher anti-tamper security
• Expandable I/O and elevator control options let you scale access, monitoring and automation without replacing controllers