Type: HID Core & Coil, Circuit Type: R-HPF / R-NPF, Number of Lamps: 1, Lamp Type: 35W High Pressure Sodium Lamp, Input Voltage: 120V, Frequency: 60HZ, Regulation: 5percent, Input Power: 43.5W, Maximum Input Current: 0.85/0.4A, Nominal Open Circuit Voltage: 120