LED letter signs: 1.High bright 2. ... 90% energy saving 4.Environmental-protection Frontlit LED letter signs popular in Europe have the advantage as ... ,red,blue,yellow,green.... and full color7.LED transformer provided input:110V-240V,output:12V8.Customized ... signs,hotel signs,hospital signs,school signs ,advertisement, architecture, decoration, exhibition, and lighting, etc. Frontlit LED letter signs ...