A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loud
speakers, used to allow a person to address a large public gathering, for example for announcements of movements at large and noisy
air and rail terminals or at a sports stadium. The term is also used for systems which may additionally have a mixing console, and
amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person
giving a speech or distributing sound throughout a venue or building.

Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers
are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many
buildings, have microphones in many rooms allowing the occupants to respond to announcements.
Sound reinforcement systems and PA systems may use some similar components, but with differing applications, although the distinction
between the two is not clear-cut. Sound reinforcement systems are for live music or performance, whereas PA systems are primarily for
reproduction of speech

The new Voice Alarm System is the fast route to EVAC-compliant emergency evacuation in schools, hotels, shopping centers,
supermarkets, recreation facilities, factories, offices and similar applications where public safety is a major concern. The Voice Alarm is a
plug-and-play system based on a controller with an emergency microphone, a built-in 240 W booster amplifier and message routing for up
to 6 zones. The controller can either be used as a simple stand-alone solution for smaller applications or easily extended up to multiple Zones.