... the information is not guaranteed to be real time due to the delay of GSM mobile network ... Modem allows the user to build a wireless, real time and inexpensive remote LED display information deployment system ... display parameters of every program (color, speed, stay time, display mode, and etc.) · Set display screen parameter ... many scan mode, such as 1/16, 1/8, 1/4, 1/2 and 1/1APPLICATIONSGPRS Modem ...