... 3.Easy to operate,maintain P7.62 led display control card Detailed description technique : 1. LED screen size ... 2.Red color,Asynchronous Controller system. This control card have memory function,For example,when you send ... a message to this control card,then you can disconnect the computer,it can ... 3.This led screen price include the control card,led moduels(led moduels size is 488mm*122mm, ...