Audio-video distribution and control systems comprising audio amplifiers, video amplifiers, audio and video switches, wall mounted key pads and infrared remote controls that provide remote signaling capability from multiple locations over existing or newly installed wiring that allow the keypads in multiple locations to communicate with and control the main audio-video controller/amplifier

'allow':40 'amplifi':10,12 'audio':2,9,13,54 'audio-video':1,53 'capabl':29 'communic':47 'compris':8 'control':6,24,50 'controller/amplifier':56 'distribut':4 'exist':34 'infrar':22 'instal':37 'key':19 'keypad':42 'locat':32,45 'main':52 'mount':18 'multipl':31,44 'newli':36 'pad':20 'provid':26 'remot':23,27 'signal':28 'switch':16 'system':7 'video':3,11,15,55 'wall':17 'wire':38

PHANTOM CONTROL

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