TorchierDim_120/220V, 50/60Hz Electronic Dimming Fluorescent Ballasts for 2D, 2C & E2C Fluorescent Lamps* Ideal for Torchiere & Table Lamps* Dimming Feature: Continous, Swift, Steady* Regulating Range 10-100% (Lamp current)* Energy Saving - High Efficiency* Abnormal Protection Circuit* Comply with IEC & EN Standard for 220V products* UL listed and Energy Star for 120V products