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Red and white color display indoor dot matrix screen , 4.76 pixel pitch 3.7 mm dot size , full alpha / numeric text with special characters bilingual display (simultaneously if required) , scrolling in both directions height quality brightness with enhanced contact , powerful backend software to control and schedule , connectivity through lane or wireless including HP I-7 processor PC , full software and programming with the following sizes : a- size 441W x 30H cm , No.1 b- size 30W x 233H cm , No.1 c- size 30W x 203H cm , No.1 dot matrix screen dot matrix screen