red and green one line led moving sign,20 characters with 53mm high font; ... down/in/out/left/right etc), set speed in 8 grades.5)Can store up to 7000 characters 6)Set ... .7)Simultaneously display time, in 12 or 24 hour mode.8)30 default graphics, like telephone, bus, clock, rocket, etc ... PC, can communicate among multiple LED signs. red and green one line led moving sign,8 characters with 53mm high font;P7 ...