The Prism Lighting Science high frequency digital ballast features a 105 kHz microprocessor designed for optimizing the output of double ended (DE) lamps. Use 2100 micromole (Pro Plus) version lamps in this ballast to get the most out of your bulb and this ballast combination. Has soft start technology and dimmability from: 1150w, 1000w, 750w, and 600w. It's recommended you only run 1000w lamps in this ballast. This DE high frequency ballast is UL listed. The Prism Lighting Science ballast was made to have all the features and technology needed for optimal performance with none of the expensive frills in order to keep it priced as competitively as possible. Comes with 240v power cord (NEMA 6-15P). 120v power cord sold separately. Ballast Specifications: Wattage: 1000W Input Volt: 120V/240V Input Current @ 1000W: 9.30A / 4.60A Input Current @ 1150W: 10.42A / 5.06A Input Power @ 1000W: 1085W / 1055W Input Power @ 1150W: 1250W / 1215W Min Power Factor: .99 THD: Ballast Physical Length 273.5 mm / 10.77in Width 178mm / 7.00 in Height 92.5mm / 3.64 in Weight 4.0kg / 8.82 lb Ballast Dimming Type 600, 750, 1000, 1150 Ballast Protections 1. End of Life (EOL) Protection 2. Short circuit protection 3. Open circuit protection 4. Ignition failure protection 5. Thermal protection Ballast Installation & Application Notes 1. Max allowable case temperature: 75 Degrees C / 167 Degrees F 2. Ambient Temperature: -20, +40 Deg. C / -4, +104 Deg. F 3. Max. Humidity: 95% 4. Ignition voltage is 5kV Ballast Performance Requirements: Rated mains voltage: 120-240V Voltage range: (+/-10%): 108-264V Mains frequency: 50/60 hz Operation Frequency: 100-120kHz