High Efficiency High efficiency design;Maximize energy savings with improved ballast efficiency Optanium ballasts for T5 lamps are part of our effort to promote environmental responsibility through Smart Solutions - energy efficient products, lighting systems, services and expertise through Philips Advance branded products. IntelliVolt Technology (120-277V);Lamp EOL Protection;UL Type CC rated - Anti-arcing circuitry provides greater flexibility to meet end-user application requirements Retail, commercial, institutional and industrial applications including; schools, offices, specialty & department stores, warehouses and manufacturing