Voice Alarm System (also called Public Adress Voice Alarm PAVA or Voice Evacuation System) is one of the elements of security in modern public buildings. Thanks to Voice Alarm System it is possible to quickly broadcast information during a fire, bomb alert or other emergency and to effectively control the evacuation process of people in dangerous areas of the building. The core operation of the PAVA is public address announcements, broadcast advertisements or background music.

From the reliability and performance of the Voice Alarm System depends the success of the evacuation operation, and therefore the most important issue is the quality of the it’s elements e.g. cable installation, which must be made of high temperature resistant materials, to ensure continued operation of the system even in the event of a fire. The detailed technical and design requirements for PAVA have been determined by EN54 regulations.

Key assumptions include:

• division of the installation into fire zones
• fire redundant loudspeaker lines
• redundant operation of system amplifiers
• use of automatic self-test systems
• backup amplifier circuit

Voice Alarm System and all their components and their architecture must meet certain assumptions.