Device of the general and selective notification

Device of the general and selective notification The system of a public address system is intended for the mass notification of people (establishment), pupils (educational institutions) or staff (law enforcement agencies). This system is developed on the basis of modern technologies and with application of innovative ideas. If earlier similar devices had the big sizes, a set of wires were spent and big energy was consumed, then the new model differs in economic qualities. The system of a public address system is made on modern radio components, applied microcontrollers with the software and works on single-wire system. The system of a public address system has two operating modes: - general regime of the notification; - selective mode of the notification. In a general regime of the notification it is clear that all people in audience (room) hear the general announcement at the same time. And in the selective mode of the notification, the head can press necessary numbers on the audience panel (rooms, departments, etc.) and to issue the address announcement. At the same time the chosen audiences will be heard addressed to them the announcement, and other audiences will give classes (work) without distracting different announcements.