red and green one line led moving sign,20 characters with 53mm high ... ; support 66 special characters.4)25 kinds of moving effects (e.g. roll, rotate, sparkle, twinkle, interlock, wipe, scroll, ... up to 7000 characters 6)Set time to power on/off.7)Simultaneously display time, in 12 or 24 hour ... or PC, can communicate among multiple LED signs. red and green one line led moving sign,8 characters with 53mm ...