2 Lamp CF26 120V/277V Universal Voltage Electronic Dual Entry Bottom Mount Metal Case Compact Fluorescent Ballast (CFL) - Programmed / Instant Start - Low / Medium / High Ballast Factor - < 10% THD - Wiretap Connectors - (1) or (2) CF26DD/E or (1) or (2) CF26DT/E or (1) CF32DT/E or (1) CF42DT/E