1): With large pitch of 20mm pitch 2): Optional communication way: RS232, RS485, TCP/IP, USB, wireless 3): Easy entry: PC or remote control entry 4): Far viewing distance and wide viewing angle 5): As one ready-to-install unit, sign can be easily mounted to wall or ceiling 6): Ability to display text 7): Ability to display graphic 8): Ability to display time 9): Ability to display countdown 10): Ability to display user logo 11): Ability to display temperature 12): Allows users make fonts and graphic by themselves 13): Available for single color or multi-color or full-color 14): Delivers 28 messaging presentation ways 15): 5 messaging moving speed 16): 10 messaging stop time 17): Offer password security 18): Brightness adjustable