Public Address System

A Public Address (PA) system is a type of audio communication system that is used to broadcast announcements, messages, or music to a large group of people in a public area. It is often used in various settings such as schools, universities, airports, train stations, shopping malls, and sports venues.

In emergency situations, a PA system can be used to make announcements to guide people to safety or to provide instructions to emergency responders. For example, in the event of a fire, the PA system can be used to alert occupants of the building to evacuate or to give instructions on the safest evacuation route.