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4K HDMI Video Wall Controller 2x2, TV Wall Processor with 8 Splicing Modes, 180° Rotate, 3.5mm Audio Extractor, IR Remote, 2x2, 1x2, 1x3, 1x4, 2x1, 3x1, 4x1, 4 TV Screen into 1 Wall Display 
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HDMl Video Wall Controller 2x2 4K, Video Wall Processor with 11 Splicing Modes, RS232, 180° Rotate, Audio Extractor, 2x2,1x2,1x3,1x4,2x1,3x1x4x1, 4 tv Screens into 1 Wall Display 
