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Bosch Security and Safety Systems I UK

Faster boarding at Warsaw Airport thanks to optimized public address and voice alarm system

Automated text-to-speech announcements are guiding passengers with high precision and speech output quality



Chopin Airport, Poland


High-level speech output quality


Automated announcements in multiple languages


Faster boarding by improved passenger guidance

Product solution

Public Adress and voice alarm system PRAESENSA


Hemi-directional loudspeaker 100 W, LS1-OC100E-1


LC1 Modular ceiling loudspeaker range, LC1-UM12E8

Analog solution falls short on quality of announcements

Traveler is looking at the airport display board
Warsaw Chopin Airport

Warsaw Chopin Airport (EPWA), operated by Polish Airports State Enterprise PPL, is the biggest airport in Poland and one of the most important hubs in central and eastern Europe. Every year, more than 17 million passengers pass through the airport, which is also the base for Poland’s flag carrier, LOT.

With the former public address system, airport staff used an analog call station to make announcements that were then transmitted to wall-mounted, standard-quality loudspeakers. Since the analog technology was inadequate for the challenging acoustic architecture of the airport building, passengers were often left unsure about the status of their boarding process.

Digital solution for precise information and guidance

The new public address and voice alarm system is based on the digital PRAESENSA solution. It was integrated into the airport’s existing IP and wiring system, thereby significantly reducing the time for installation.

  • Ceiling-mounted hemi-directional loudspeakers ensure that announcements are precisely delivered to the passengers at a particular gate
  • Text-to-speech functionality
  • Flight number, airline, destination, and boarding information are retrieved and issued automatedly as passenger information announcements
  • Announcements in Polish and English as standard, additional languages are available
Modern airport terminal where travellers walking around
High ceilings and special architecture are often a challenge for airports.

Chopin Airport now has a state-of-the-art public address system. The fact we could build on the existing IP infrastructure significantly reduced the amount of time for the installation work.

Józef Bycul Project Manager at Bosch Building Technologies

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