... tactile 4 pass ISO9001: Key Specifications/Special Features:Electroluminescent (EL) panel Colors: blue, green, orange or white ... blue and orange. The life of an EL lamp varies based on the way it is used ... . EL lamps have a half life; once they ... being used.BacklightingEmbedded LED, Fiber optic & electroluminescent (EL) backlighting are options that can save you money, ...