Digital Display LED Lighting Demo Box LED Test Box Led Show Case 3521-7P. AC universal socket/AC clamp/DC12 clamp: 1PC. High quality AC dimmer: 1PC (AC the lamp dimming effect test). T8 Light box line: 1PC. The test instrument: AC multifunctional testing table 1PC. (test AC current, voltage, power, power factor, annual electricity consumption, the annual electricity). The DC power meter: 1PC (power DC12V). Power cord: 1PC (According to the requirements of configuration). Note: the lamp holder and other functions, can be customized!