? Public Address SystemIt can play background music, create a good environmental atmosphere, provide people with a quiet and elegant environment, and can also undertake the function of cable broadcasting and play notices; In case of fire, it is also used as fire broadcasting system to command evacuation. The broadcasting system can also be connected with the telephone exchange system through the telephone interface to realize local or remote calls by telephone.

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Structure diagram of digital public address system

Structure diagram of analog public address system