... 90% energy saving 4.Environmental-protection Frontlit LED Channel Letter Sign have the advantage as following:1.CE , ... and colorful-visible day and night4.Laser cut acrylic on the face,304# stainless steel with brushed ... ,red,blue,yellow,green.... and full color7.LED transformer provided input:110V-240V,output:12V8.Customized ... decoration, exhibition, and lighting, etc. Frontlit LED Channel Letter Sign