front lit letters: 1.High bright 2.Over 100,000 ... to 90% energy saving 4.Environmental-protection Great luminous front lit letters have the advantage as following:1.CE ,RoHS ... available: white,red,blue,yellow,green.... and full color7.LED transformer provided input:110V-240V,output:12V8.Customized design ... , architecture, decoration, exhibition, and lighting, etc. Great luminous front lit letters