Panel Size 51 :(W) x 36" (H), 1800 (W) x 920 mm (H) Readable Area :50 (W) x 35" (H), 1780 (W) x 900 mm (H) Number of Panels:2 Panel Driving Method :Motorized Grid 2 x 2", 50 x 50mm Reading Method CCD Optical Sensor (RGB LED) Print Method Inkjet - HP ...