Keri Systems KB-4D-CTLNE Borealis KB Cloud Access Controller 4-Door Board Only

Optimize multi-site security with the Keri Systems Borealis KB Cloud Access Controller 4-Door board-only solution. Designed for organizations that need secure, cloud-hosted access control without sacrificing local intelligence, the Borealis KB controller processes decisions on-board—reducing network traffic and preserving bandwidth for critical surveillance and monitoring systems. The 4-door/4-reader controller includes onboard TCP/IP (Ethernet) connectivity for straightforward deployment over existing LAN/WAN networks and supports up to 10,000 cardholders with a 10,000-event buffer for resilient, audit-ready operation.

Installers and security managers will appreciate its expandable architecture: each RS-485 trunk can accept up to four NXT-4x4 I/O boards for additional inputs and outputs, enabling integrations with alarms, sensors, and door hardware. Housed to fit in a locking metal enclosure, this controller is built for demanding environments—education, healthcare, commercial, and enterprise facilities that require dependable access control tied to cloud backup and remote management. Pair the Borealis KB with the Borealis Connect App for fast QR-code enrollment and Scan & Go workflows.

Choose Keri Systems for a scalable, network-friendly access control backbone—order the KB-4D-CTLNE for streamlined security deployments today.

• Simplifies cloud-hosted access control for faster deployments and centralized management
• 4-door/4-reader intelligence that makes local decisions to conserve network bandwidth
• Built-in Ethernet/TCP-IP connectivity for easy integration with existing LAN/WAN infrastructure
• Scales with up to four NXT-4x4 I/O boards per RS-485 trunk for flexible I/O expansion
• Stores up to 10,000 cardholders and a 10,000-event buffer for reliable on-site operation
• Secure, tamper-resistant design that fits in a locking metal enclosure for physical protection