High cost performance advertising led signs outdoor Name:LED channel letter outdoor light box signs Material: Aluminum and neon Usage: Outdoor Power:Input:110-240V AC,Output:12VDC Size:2400X800 Style:LED front lighting Certificate:CE,UL ONLINE SERVICE SKYPE:luyanfeihelen LED Front-lit Channel Signs is the most common type of illuminated signs; it can be very good to show the contours of the sign even in the night. Basically, light passes through the front face of the sign causing it to light up at night. Found in 2005, Dragon Signs Technology Co.,LTD is specialized in manufacturing, designing and developing outdoor LED signs , metal signs etc, we are a UL certified sign manufacture in china.