Bodine Electronic Emergency Fluorescent Ballast Input Voltage 120 to 277V AC Number of Bulbs Supported 1 2 Max Bulb Watts 215 W T10 T12 T8 T9 Ballast Bulb Type Initial Lumens 300 to 700 lm Steel Housing Material 9 7/16 in Length 2 7/16 in Width 1 3/16 in Height Standard Profile 90 min Emergency Illumination Time 24 hr Recharge Time