1.crystal led light box 2.6-10mm light guide of 50,000h lifespan 3.CE,UL,SAA ,RoHS ... -year warranty Product name: crystal Led light box Descriptions:1. Description: table stand single sided crystal light box. 2. Dimension: overall size 297mm*210mm ... in indoor.Power Supply: 110V-330V AC-12VDC, a transformer for each one. CE, UL certified transformer. Applications:Airport, banks, large ...