This is a compact version of our multi-function portable LED demo case It is assembled with high-grade aluminum alloy framework, handle and buckle, easy cleaning Acrylic laser engraving exhibition board, and stainless steel on the edges. Compatibility and Features This LED test box is compatible with most universal LED lights: GU10 (AC), E12 (AC), E26/E27 (AC), MR16 (DC) bulbs. The model of each lamp holder is marked on the exhibition board for your convenience to quickly locate what you need. Besides the main switch that controls all sockets, each lamp also comes with one independent switch.Indicator gauge is used to display the wattage, annual power consumption, current, input voltage, PF (power factor), and current frequency of AC LED products. As for its accuracy, refer to the following list for minimum values:Wattage: 0.001 WCurrent: 0.001 AInput voltage: 0.1 VPower factor: 0.001 PFCurrent frequency: 50.00/60.00 HZAnnual power consumption: 0.001 KW/HMax measured power is 999.9 W; beyond this, it would show HHHHH.There are two dimmer controls in the case, one for DC 12V output, the other for E26/27 socket. When a light is connected to the DC 12V output, you can control the brightness with the rotary knob dimmer on the left. When testing an E26/27 base light, put the toggle switch to “DIMMABLE” and control the AC LED product with the 5-position dimmer.Inside the case, a storage slot is designed for storing light bulbs and other tools. Our test box includes an extended cord and wire clamp that can be used to test external lights (both AC and DC).SpecificationInput AC voltage: 120VMR16 lamp socket DC 12VPackage includes:1 pc LED test case1 pc power line1 pc extended cord