Contents Ballast; Input Voltage 120 Vac; Input Current 2.15 Ampere; Input Power 118 W; High Pressure Sodium Lamp; 100 W Lamp Wattage; Reactor Circuit; Ansi Code S54; Size 2-3/5 Inch L X 2.4 Inch W X 2-3/16 Inch H; Approval Ul, Csa