The system generally used for entertainment purpose. But in Building and Industries will convert this in to effective communications systems using the same . In which periodically evacuation and emergency preparedness will be communicated through the strategically located speakers. For this master and slave amplifiers with mic and console and speakers of suitable capacity with be connected to the various spots and locations . In which even music’s also played with DVD player as audio received sent to our office and building through which the entire area can be addressed to communicating the messages in crisp at the distress time.