The Orion Digital Dimmable Ballast is one of the latest developments in our industry for driving both Metal Halide MH and High Pressure Sodium HPS lamps/bulbs. ETL Listing and dimmable wattage selection from 400, 600, 1000W and OverDrive selections make the Orion 100W Digital Dimmable Ballast a quality mid market lighting ballast. Specifications: Input: Vin: 85 Vac-265 Vac Rated Vin: 120/240 Vac Protection of over current input: interior fuse PF: › 0.99 THD: ‹10% Frequency in: 50Hz/60Hz Output Power Out: 1000W V Lamp: 210 Vac- 300 Vac Frequency out: ›40KHZ Current Crest Factor (CCF): ‹1.7 Voltage of Open Circut: ›300V Ignition Voltage: ‹4KV Efficiency: ›93% (240 VAC) Physical Specs: Wiring Distance: greater than or equal to 65 feet Worling Temperature range: -22°F ~ + 1222°C Maximum Case Temperature: 176°C