The LEDView530 can drive screens as small as 128×96 pixels or as large as 1920×1200. In addition, it also includes a “multiple-unit mode” with auto-zoom functionality where multiple LEDView530s can be connected together, each powering its own LED screen so as to create larger video walls. Up to four screens can be combined to create a maximum resolution of 7,680×4,800.
Full specs are here: http://www.calibreuk.com/pvp.htm