ANSI (American National Standard Institute): Defines solid-state lighting devices and components.IESNA (Illuminating Engineering Society of North America) - Establishes procedures for measuring the photometry and electrical characteristics of solid-state lighting products.UL (Underwriters Laboratories) - Prepares safety standards for LED lighting products such as drivers, controllers, arrays, packages and modules.NEMA (National Electrical Manufacturers Association) - Specifies the mechanical, thermal and electrical interfaces between luminaires.