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Bosch Praesideo gets your message across, no matter what

With over 2000 installed systems worldwide, Praesideo is the number one choice for demanding public address and emergency voice evacuation applications. Superb sound quality, operational versatility and a program of continuous enhancements ensure Praesideo leads the market.


Digital versatility
Bosch Praesideo is the world’s first fully digital public address and emergency sound system.The system’s unique optical network offers total freedom in system design, interference-free audio and a high level of redundancy that traditional systems cannot offer. It is fully programmable, and interfaces with other security systems. Praesideo redefines the boundaries of quality, flexibility and reliability.
Scalable solution
The de-centralized network architecture of Bosch Praesideo facilitates simple ‘daisychain’ inter-connections. Units can be added or removed as required for total freedom of configuration.

Uninterrupted operation
The network can be configured as a ‘redundant loop’ for extra reliability. This ensures that even a physical break in the fiber-optic cable won’t affect operation – critical for uninterrupted operation in emergency sound systems.

EVAC certified solution
Bosch Security Systems offers a total commitment to certification. Praesideo is IEC60849 and BS5839: part8 certified by the TÜV, one of Europe’s leading authorities. Furthermore, it is certified for many local evacuation standards.

To guarantee EVAC compliancy, installation must also be carried out according to exacting standards. Bosch runs a certified partner program with trained installers to add extra assurance that these requirements are met.


  • Unique optical network offers total freedom in system design
  • Interference-free audio
  • High level of redundancy 
  • Fully programmable
  • Interfaces with other security systems
  • 28 dynamically assigned digital audio channels
  • Digital message management
  • Background music (BGM) 
  • Routing to a virtually unlimited number of zones
  • Voice alarm applications
  • Monitors system, control, amplifier operation, microphones
  • Loudspeaker line integrity and individual loudspeakers


Simplified configuration
The system is straightforward to configure and re-configure, either locally or remotely, facilitating a quick response to changes.With the Praesideo Logging software, logging information of multiple systems can be accessed for remote monitoring and diagnostics.

Logical for end-users
The Bosch Praesideo products are easy to operate. Operators require very little explanation to competently use Praesideo. Even the biggest systems are easy to operate via a PC or touch screen using the system’s open interface.

Low cost of ownership
Bosch Praesideo offers low cost of ownership. New or upgraded installations are highly cost effective thanks to its dual public address and voice alarm functionality,  expandability, modular architecture and programmable flexibility. Praesideo’s high reliability guarantees lower maintenance costs.


Part of an integrated security solution
Bosch Praesideo’s open platform can communicate with third-party systems and peripherals, like building management, fire alarm, and passenger information systems. The product is the most important international treaty concerning the safety of merchant ships.