APPARATUS FOR BROADCASTING AN EMERGENCY SITUATION AND METHOD FOR CONTROLLING AIR ZONE

摘要

The present invention relates to a relay apparatus for broadcasting an emergency situation outputted through a plurality of speakers by receiving a plurality of signals. For this, provided is a relay apparatus for broadcasting the emergency situation, which includes a line check unit which supplies the state information of a plurality of speaker lines, a channel control relay unit which selectively connects a plurality of input terminals to which the signals are inputted to a plurality of output terminals which are connected to the speaker lines and connects the line check unit to the output terminals, and a central control unit which connects any one input terminal to any one output terminal or connects the line check unit to each output terminal by controlling the channel control relay unit and checks each failure state of the speaker lines based on information about the speaker lines.