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Light Emitting Diodes (L.E.D.)
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To date, Underwriters Laboratories has evaluated LED lighting systems and components for a variety of applications, including Exit luminaires, signs and sign retrofit applications and general lighting. These evaluations have been for complete systems or components such as LED drivers. These systems and components are covered under various UL categories relative to their application. Some of the categories are Signs, Sign Accessories, Sign Conversion Retrofit Kits, Luminaires, Under-cabinet Luminaires, Lamp Adapters and Miscellaneous Lampholders. Related Standards are UL 879A (an Outline of Investigation) and UL 1993.