red and green one line led moving sign,20 characters with 53mm ... rotate, sparkle, twinkle, interlock, wipe, scroll, snow, up/down/in/out/left/right etc), set speed in 8 grades ... mode.8)30 default graphics, like telephone, bus, clock, rocket, etc. 9)Password protection.10)Message transmission/ ... PC, can communicate among multiple LED signs. red and green one line led moving sign,8 characters with 53mm ...