36.00mm (1.4¡±) 4.0x4.0 square dot matrix led display. Features Row:5, col:9 Square dot 1.2 inch matrix height Dt size 3.00mm Low current operation High contrast and light output Compatible with ascii and ebcdic codes Stackable horizontally Column cathode and column anode available Easy mounting on pc. Boards or sockets Multicolor available Categorized for luminous intensity Mechanically rugged Standard: gray face , white dot Rohs compliance.