A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals. Public Address (PA) Systems play a vital role in crisis management and co-coordinating response actions during an emergency situation. This is more so if the crisis occurs in a public place, crowded areas, markets, railway stations, offices, hotels etc.