... controlling system, easy to control SpecificationsP20 Outdoor LED display screen for advertising High definition, clear picuture Hot selling. Outdoor ... -use, water proof P25 Outdoor LED display screen for Advertising Size of standard unit: 250*250mmPixel pitch ... current,short circuit,overpressure, under-voltage protect function. Display content WORD documents ,picture documents(BMP/JPG/GIF/ ...