Type: Electronic, Lamp Type: F24T5HO, Number of Lamps: 2, Input Voltage: 120/277V, Frequency: 50/60HZ, Start Method: Programmed Rapid Start, Nominal Line Current: 0.45/0.23A, Power Factor: >0.98, THD: <10percent, Crest Factor: <1.7, Input Power: 53/52W, Ballast