A Public Address System (PA System) is an audio communication solution used to deliver announcements, background music, and emergency messages to a large audience. PA systems consist of microphones, amplifiers, speakers, and control equipment that distribute clear audio across zones and buildings. Modern PA systems include IP-based paging, SIP integration, and voice alarm (EN54) compliance, making them suitable for safety-critical environments.

Used in offices, schools, hospitals, factories, malls, airports, and campuses, PA systems improve communication efficiency and safety. Whether for routine announcements or emergency evacuation messages, a well-designed public address system ensures high speech intelligibility and reliable operation. Available in analog, digital, and IP configurations, PA systems can be scaled easily to meet small or large site requirements.