... optional)Brightness900 ~ 8000 LUX (depend on size)Characteristics1 Working voltage: 12V / 24V DA2 Certificate adapter: 110V ~ 220V, CE, RoHS3 ... Light box signsMaterialAluminium framelight guide board, T4 or T5 fluorescent lamp,CCFL or LED strip,diffuser coating, reflective coatingArts and ... sizeA2AuthenticationCE, UL , Rohs, SASOadditional ChoiceT4 or T5 fluorescent lamp, LED strip, CCFL,frame color