P1.538 COB Indoor LED Video Wall — Common Cathode, 24/7 Ready This P1.538 flip-chip COB panel is built for continuous commercial operation. A common cathode driver design cuts heat generation and power draw at the same brightness, while the 600×337.5mm die-cast aluminum cabinet keeps every seam flat and every module serviceable from the front. It is the model to specify when the screen runs all day in a lobby, control room, retail flagship or showroom and the electricity bill