BOSCH PRAESENSA PRA-SCL – System Controller Large

The BOSCH PRAESENSA PRA-SCL – System Controller Large is the most powerful and feature-rich controller in the PRAESENSA family, designed for modern Public Address and Voice Alarm systems. It handles all core system functions, including audio routing, message playback, BGM distribution, device supervision, fault monitoring, and event management across very large and complex installations.

With support for up to 250 devices and over 500 zones, the PRA-SCL delivers exceptional scalability, making it suitable for airports, transportation hubs, stadiums, industrial campuses, universities, hospitals, and major commercial buildings.

Its OMNEO IP networking, AES128 audio encryption, TLS control security, and built-in message management ensure reliable, secure, and high-quality communication for both business and emergency operations.

🔹BOSCH PRAESENSA PRA-SCL – System Controller Large   Advanced System Control & Audio Routing

The PRA-SCL manages:

• Up to 250 system devices

• More than 500 paging zones

• Multiple simultaneous audio channels

• Priority-based routing for emergency and business paging

• Dynamic audio allocation to reduce bandwidth usage

• Playback of up to eight messages at once

It routes calls, tones, and background music with full control over zone occupancy and priority levels.

🔹BOSCH PRAESENSA PRA-SCL – System Controller Large OMNEO Audio-over-IP with Secure Communication

The controller includes:

• Five OMNEO network ports with RSTP

• Support for Dante and AES67 external audio sources

• Advanced Encryption Standard (AES128) for audio data

• TLS security for control data

This ensures secure, reliable, and flexible system communication.

🔹BOSCH PRAESENSA PRA-SCL – System Controller Large   Built-In Message Manager

The internal message system provides:

• High-definition uncompressed WAV storage

• Scheduled and manual playback

• Supervisory monitoring of message integrity

• Real-time clock with NTP synchronization

Perfect for automated evacuation messages, alerts, and BGM routing.

🔹 Extensive System Supervision & Fault Logging

The PRA-SCL supervises:

• All connected PRAESENSA devices

• Stored messages and tones

• Network paths

• Data integrity

• DC power inputs

All events and faults are stored in the internal log for diagnostics and compliance.

🔹 Ready for Mission-Critical Applications

Designed for high availability, the controller includes:

• Dual DC power inputs with polarity protection

• Optional dual-redundant controller configuration

• Watchdog timers for automatic recovery

• Secure and monitored communication links

It ensures continuous operation even under heavy system load or unexpected failures.

🔹 User-Friendly Configuration

A built-in web server allows:

• System configuration

• Device management

• File uploads

• Event log review

Accessible through any modern web browser—no software installation needed.

    Key Features

• Controls up to 250 devices and 500+ zones

• Dynamic and secure audio routing

• Built-in message storage and playback (8 simultaneous)

• OMNEO IP networking with Dante/AES67 compatibility

• AES128 and TLS encryption

• Five OMNEO ports with RSTP support

• Dual DC power inputs

• Full system supervision and event logging

• Web-based configuration

• Optional redundant-controller setup

  Ideal Applications

• Airports & transport hubs

• Stadiums & arenas

• Metro & railway networks

• Universities & campus-wide systems

• Hospitals & critical facilities

• Shopping malls & commercial complexes

• Large commercial towers

• Industrial and energy plants

• Smart city communication systems