To select the controller, the color of LED module (single color LED Module or Full color LED Module) and the board dimension (number of rows and columns of the scrolling board) should be considered. As each controller, depending on the design, is capable of supporting a certain number of modules so the output (playback effects, texts, and pictures or images) will be different accordingly

what is SCROLLING BOARD Module

LED Scrolling Board or Urban TV made up of such blocks called the scrolling board module. LED Module will be connected in parallel by a cable as flat cable and programmed through the controller, the power supply shall provide the required power for LED board while since the blocks can be replaced and substituted again they called LED Module as in electronics the components capable of separating and re connecting are defined and called modules

One of the important and key characteristics which must be considered in LED module is its dimension or size .LED Modules are constructed in such sizes as 16x16 or 16x32 .By the setting of different LED Modules next to each other the scrolling board or Urban TV Shall be produced in different sizes and performances expected from the clients side . Another feature that is important in case of LED modules is dot Pitch or pixel Pitch.  Dot Pitch is the center to center distance of the module pixels usually in millimeter unit. For example P10 represents the module that center to center of distance between of its two adjacent pixels is 10 mm. The smaller dot pitch of LED module showed more LED mounted in the module block upon the certain size and normally the quality of module image shall be promoted and improved accordingly. The next feature that should be considered is the LED color Module. At present different LED modules available in the market are in a variety of colors as single color, tri-color, seven color and full color