Advanced Energy power supplies are designed for the highest efficiency attainable, normally in excess of 90%. Advanced Energy power supplies also have a longer lifetimes because they run cooler, which improves component lifetime. The supplies are designed for operation in harsh environments, with environmental ingress protection ratings of IP66 or IP67 at ambient temperatures of -30°C to +70°C. The wide input operating range of 100 to 277V_AC means that Advanced Energy power supplies with the suffix SW operate over a range of 90 to 305V_AC. While many LED power supplies were designed to the older 1310 specification, all Advanced Energy power supplies meet and are approved to UL standard 8750. Lastly, Advanced Energy maintains a design standard of excellence that allows the company to provide a 5 year warranty.