These are the systems used for the safe evacuation of the employees and visitors in the buildings in case of emergency. In order to make central warnings in large buildings and large areas, public address equipment must be installed. In accordance with the “Regulation on the Protection of Buildings from Fire”, in all buildings where the building height exceeds 51.5 m, in public buildings with a construction area of more than 5000 m2 or with a total number of users exceeding 1000 people, in shopping centers, supermarkets, industrial facilities and similar buildings, It is obligatory to install emergency announcement systems in hotels, motels and dormitories with more than 200 beds in the building. Emergency Announcement and Addressing Systems are used for emergency announcement, voice evacuation and music broadcasting in buildings such as hospitals, schools, shopping and business centers, industrial facilities, factories.