red and green one line led moving sign,20 characters with 53mm high font;P7.62mm; ... .g. roll, rotate, sparkle, twinkle, interlock, wipe, scroll, snow, up/down/in/out/left/right etc), set speed in 8 grades ... control or PC, can communicate among multiple LED signs. red and green one line led moving sign,8 characters with 53mm high ...