Intellivolt, Electronic Ballast, For 1-2 F72t8, F96t8, & F96t8es Lamps, Approved For Commercial Applications, Instant Start, High Power Factor. Input Vage 120V Or 277V, Input Frequency 50/60 Hertz, Ballast Factor 1 Light 1.05, 2 Light .87, Ballast Efficacy Factor 2 Light F96T8 .81 Light F96t8/ES.84, Max THD% 10%, Minimum Start Temperature F96t8 32 Degree Fahrenheit, F96t8/ES 60 Degree Fahrenheit, UL Listed, CSA Certified, Compatible With Sensormatic Systems, Individually Boxed.