led display, led moving sign, indoor led display, led screen, led message sign,led sign, led board,led advertising display,led p Goods desription:led display, led moving sign, indoor led display, led screen, led message sign,led sign, led board,led advertising display,led panelCharacters ... cable:8m, USB cable:1.5m)Communication types: a) Infrared remote control b) Direct PC via RS232 or RS485 cable ...