Loudspeaker Equipment
General And Emergency Business Broadcasting Overhead
Remote Control Microphone
Loudspeaker
Radio Antenna
Attenuator
Terminal Board
Terminal Connection
Electric Wire
Cable1
Conduit2
Metal Ducts And Troughs
Cable Rack
Boxes1
Support Material
Fireproof Compartment Penetration Treatment, Etc.1
Grounding Work9
Painting Work1
Construction Cost