Keystone Technologies 13-Watt 1 or 2-Lamp CFL Rapid Start Electronic Fluorescent Replacement Ballast

Keystone Technology's CFL rapid start electronic ballast is designed to operate 1 or 2 CFL lamp. Featuring 120-Volt to 277-Volt input and high power factor design. See the document below for complete specifications including additional lamp wattages compatible with this ballast.|Sound rated: A|Minimum starting temperature: 0 degree F, -18 degree C|Maximum case temperature: 75 degree C, 167 degree F|Meets FCC part 18 (class B) consumer limits|Transient protection meets ANSI/IEEE C62.41 Cat. A|Ballast frequency for all listed lamps: 20KHz to 33KHz|Lamp end-of-life protected|Class P, type 1-outdoor