Energy efficient LED system, 85 percent energy saving over equivalent incandesent task lighting fixtures. Long-life, low maintenance. 50,000 hour lamp life at 70 percent lumen maintenance. Special acrylic lens formulated for LED use. Integrated 120V system; no external remote transformers or drivers. Low Profile; the 3.75 height makes it nearly invisible upon installation. Easy installation, captive screws and Speedlink technology make for quick installation. No UV or infrared energy, objects will not discolor or fade over time. Cool operating temperature. Speedlink system links a maximum of 24 units. On, Off switch.