AC-425IP-BU Expandable Four Reader IP Network Access Controller

AC-425IP-BU Expandable 4 Reader IP Network Controller from Rosslare Security is a professional-grade network access control panel engineered for scalable commercial security applications. Designed for advanced online and offline functionality, this intelligent controller supports up to 30,000 active users and delivers dependable operation with non-volatile memory protection during total power loss. Ideal for office buildings, commercial facilities, apartment complexes, and enterprise environments, the AC-425IP-BU provides reliable access management with flexible expansion capabilities. :contentReference[oaicite:0]{index=0}

Advanced Access Control Performance

The AC-425IP-BU supports up to 4 readers out of the box and can be expanded for larger installations. Built with real-time monitoring and automation features, it accommodates multiple access areas, schedules, credential types, and event logging requirements. A built-in real-time clock with super-cap backup maintains system timing for up to 24 hours during complete power outages without requiring battery replacement.

• Supports 30,000 active credentials and 30,000 PIN codes
• 4 reader ports with expansion capabilities
• 20,000 non-volatile FIFO event log records while offline
• 128 access groups and 128 access areas
• 128 time zones and 64 holiday schedules
• 64 automation smart links for advanced control logic

Flexible Integration and Expansion

Designed for compatibility across modern security deployments, the controller supports industry-standard Wiegand reader formats from 26-bit to 64-bit along with multiple keypad formats. Expansion modules enable additional readers, inputs, and outputs for growing security requirements. TCP/IP communication and secondary RS-232 connectivity provide installation flexibility for system integrators and security professionals.

• Expandable using MD-IO84B I/O expansion modules
• Supports MD-D04B expansion for additional reader capacity
• Industry-standard Wiegand compatibility
• Supports electric strikes, maglocks, deadbolts, and sliding doors
• Secondary RS-232 serial port for PC connectivity

Built for Commercial Security Applications

The AC-425IP-BU provides dependable operation for high-demand access control environments where reliability and scalability are critical. LED indicators simplify diagnostics and monitoring while offline capabilities ensure continuity during network interruptions.

• Commercial office buildings
• Apartment and multi-tenant facilities
• Industrial and warehouse security
• Enterprise access control systems

Security professionals seeking a scalable IP access controller can rely on the Rosslare AC-425IP-BU for dependable credential management, flexible expansion, and long-term commercial security performance. :contentReference[oaicite:1]{index=1}

Technical Specifications

• Model: AC-425IP-BU
• Brand: Rosslare Security
• Reader Capacity: 4 Readers
• User Capacity: 30,000 Active Credentials
• PIN Capacity: 30,000 PIN Codes
• Access Groups: 128
• Access Areas: 128
• Time Zones: 128
• Holiday Schedules: 64
• Automation Links: 64 Smart Links
• Inputs: 4
• Outputs: 4
• Event Log: 20,000 Offline FIFO Records
• Connectivity: TCP/IP and RS-232
• Reader Support: 26-Bit to 64-Bit Wiegand Formats
• Power Protection: Non-Volatile Memory and RTC Super-Cap Backup
• Expansion Options: MD-IO84B and MD-D04B Modules