AC-225-BU Expandable Two Reader Networked Access Control Panel Controller
AC 225 BU expandable networked access control panel delivers reliable entry management with online and offline operation for advanced security environments. The system supports up to 30000 credentials and PIN codes with flexible access groups time zones holidays and automation functions. Event logging remains active during offline conditions while expansion support enables added inputs outputs and reader capacity. Built for commercial industrial and secure facilities this controller supports multiple reader formats locking hardware options and dependable real time performance.
- Supports 30000 credentials and PIN codes
- Stores 20000 offline event records
- Expandable reader input and output capacity
- Real time clock backup holds settings
- Supports locks strikes and sliding doors
Supports full online and offline operation, ensuring continuous access control performance even during network interruptions.
Manages up to 30,000 active credentials and 30,000 PIN codes, making it ideal for medium to large-scale access control deployments.
Provides support for 128 access groups, 128 access areas, and 128 time zones for highly flexible security management.
Includes support for 64 holidays and 32 Smart Links automation functions to simplify scheduling and system automation.
Stores up to 20,000 nonvolatile FIFO event records while offline, preserving critical activity logs during communication outages.
Expandable with MD-IO84B I/O modules to add 8 inputs and 4 outputs for increased system flexibility.
Supports MDD02B 2-Reader expansion modules, allowing connection of additional readers with expanded input and output capacity.
Features a built-in real-time clock with super-cap backup that maintains accurate system time for up to 24 hours during total power loss.
Eliminates battery replacement requirements by using super-cap technology for RTC backup reliability.
Compatible with a wide range of Wiegand reader formats and PIN keypad formats for seamless integration.
Supports multiple locking hardware options including deadbolts, electric strikes, magnetic locks, and sliding door systems.
Designed as an expandable 2-reader networked controller, providing scalable access control capabilities for evolving security environments.
| MODEL NAME | AC-225-BU Expandable 2-Reader Networked Access Control Panel |
| BRAND | ROSSLARE |
| SKU | AC-225-BU |
| CATEGORY | Network Controllers |
| PRODUCT TYPE | Expandable 2-Reader Networked Access Control Panel |
| READER SUPPORT | 2 Readers (expandable) |
| NETWORK SUPPORT | Yes |
| ONLINE OPERATION | Supported |
| OFFLINE OPERATION | Supported |
| ACTIVE CREDENTIAL CAPACITY | 30,000 Credentials |
| PIN CODE CAPACITY | 30,000 PIN Codes |
| ACCESS GROUPS | 128 |
| ACCESS AREAS | 128 |
| TIME ZONES | 128 |
| HOLIDAY SETTINGS | 64 Holidays |
| SMART LINKS | 32 Automation Smart Links |
| EVENT LOG STORAGE | 20,000 Events |
| EVENT STORAGE TYPE | Nonvolatile FIFO Memory |
| OFFLINE EVENT RECORDING | Supported |
| I/O EXPANSION SUPPORT | Yes |
| I/O EXPANSION MODULE | MD-IO84B |
| EXPANSION INPUTS | Additional 8 Inputs |
| EXPANSION OUTPUTS | Additional 4 Outputs |
| READER EXPANSION MODULE | MDD02B |
| ADDITIONAL READER SUPPORT | Additional 2 Readers |
| ADDITIONAL INPUTS WITH MDD02B | 4 Inputs |
| ADDITIONAL OUTPUTS WITH MDD02B | 4 Outputs |
| REAL-TIME CLOCK | Integrated |
| RTC BACKUP TYPE | Super-Cap Backup |
| RTC POWER HOLD TIME | Up to 24 Hours |
| BATTERY REPLACEMENT REQUIRED | No |
| TOTAL POWER LOSS RECOVERY | RTC Maintains Time |
| READER FORMAT SUPPORT | Wide Range of Wiegand Formats |
| PIN KEYPAD FORMAT SUPPORT | Supported |
| LOCK COMPATIBILITY | Wide Range Supported |
| DEADBOLT SUPPORT | Supported |
| ELECTRIC STRIKE SUPPORT | Supported |
| MAGLOCK SUPPORT | Supported |
| SLIDING DOOR SUPPORT | Supported |
| AUTOMATION SUPPORT | Smart Link Automation |
| ACCESS CONTROL TYPE | Networked Access Control |
| CREDENTIAL MANAGEMENT | Integrated |
| USER AUTHENTICATION | Credential and PIN Support |
| EVENT TRACKING | Integrated Logging |
| MEMORY TYPE | Nonvolatile |
| COMMERCIAL APPLICATION | Suitable |
| ACCESS MANAGEMENT | Area and Group Based |
| DOOR CONTROL | Multi-Door Expansion Capable |
| INSTALLATION TYPE | Access Control Panel Installation |
| POWER LOSS PROTECTION | RTC Backup Retention |
| CONTROLLER TYPE | Expandable Controller |
| SCALABILITY | Expandable Design |
| SYSTEM INTEGRATION | Supports Reader and I/O Expansion |
| AUTOMATION FUNCTION | 32 Smart Links |
| PRODUCT FAMILY | Rosslare Network Controller Series |
AC-225-BU Expandable 2-Reader Networked Access Control Panel from Rosslare is a powerful and scalable access control solution designed for commercial and enterprise security environments. Engineered for reliable online and offline performance, this advanced networked controller supports up to 30,000 active credentials and PIN codes, making it ideal for office buildings, industrial facilities, educational campuses, and multi-site access control deployments.
Advanced Access Control Performance and Expansion
The AC-225-BU delivers flexible access management with support for 128 access groups, 128 access areas, 128 time zones, 64 holidays, and 32 Smart Links automation functions. Its expandable architecture allows installers to increase system capacity using compatible expansion modules, providing long-term scalability as security requirements evolve.
- Supports 30,000 active credentials and 30,000 PIN codes
- Handles 128 access groups and 128 access areas
- Supports 128 time zones and 64 holiday schedules
- 32 Smart Links automation capabilities
- Full online and offline operational functionality
Reliable Operation with Intelligent Event Management
Designed for uninterrupted security performance, the controller stores up to 20,000 nonvolatile FIFO event records while offline, ensuring event tracking remains intact during network interruptions. A built-in real-time clock with super-cap backup maintains accurate system time for up to 24 hours during total power loss without requiring battery replacements.
- 20,000 offline event log storage capacity
- Nonvolatile FIFO event recording
- Real-time clock backup holds operation up to 24 hours
- No battery replacement required
- Maintains operational reliability during outages
Flexible Integration for Commercial Security Systems
The AC-225-BU Networked Access Control Panel supports a wide range of Wiegand reader formats, keypad configurations, and locking hardware, simplifying integration with existing access control infrastructure. Compatible with electric strikes, deadbolts, magnetic locks, sliding doors, and additional reader expansion modules, it offers installers exceptional deployment flexibility.
- Supports Wiegand reader and keypad formats
- Compatible with electric strikes and maglocks
- Supports deadbolts and sliding door systems
- Expandable using MD-IO84B I/O expansion module
- Expandable using MDD02B 2-reader expansion module
Security integrators and access control professionals can rely on the Rosslare AC-225-BU for scalable performance, intelligent automation, and dependable security management across demanding commercial environments.
Technical Specifications
- Model: AC-225-BU
- Type: Expandable 2-Reader Networked Access Control Panel
- Credential Capacity: 30,000 active credentials
- PIN Code Capacity: 30,000 PIN codes
- Access Groups: 128
- Access Areas: 128
- Time Zones: 128
- Holiday Schedules: 64
- Automation Links: 32 Smart Links
- Offline Event Storage: 20,000 FIFO nonvolatile records
- Expansion Options: MD-IO84B and MDD02B modules
- RTC Backup: Super-cap maintains clock up to 24 hours
- Reader Support: Wiegand reader formats
- Lock Compatibility: Deadbolts, electric strikes, maglocks, and sliding doors






