LED (light emitting diode) under cabinet add-on puck light. Single expansion puck for Good Earth Lighting Ecolight expandable plug-in puck light kit. Smooth light technology eliminates hot spots and reduces glare while providing full coverage with even light distribution. Fully dimmable. Quick connect installation. Cannot operate on its own. Expected bulb life of 36,000 hours. White finish and durable plastic construction. ETL and UL (Underwriter's Laboratories) listed.