... product Product name: ali express tricolor high quality led wireless taxi roof signs 1,ali express taxi roof signs2,tricolor ... : Through RS232(free),( you can choose RS485, USB, TCP/IP, Wireless communication )the screen can display text, display images, display time ... )AV, S-Video, VGA, DVI, YPbPr, HDMI, SDIOperating systemWindows (2000/XP/Vista)Control distanceAT5 cable:less than 100 m; Single ...