... CE 1, High resolution Indoor P4 SMD tricolor LED display screen 2, Full color LED chips 3, LINSN ... LED Display ScreenSkill SpecificationsVoltage: AC220V, 50Hz or AC110V, 60HzTenure Life: >10, 0000 hoursWorking temperature: -20 degree ~ +60degreeModule size(W×H): ... over-current,short circuit,overpressure, under-voltageProtect function. Display content WORD documents ,picture documents(BMP/JPG/GIF/PCX ...