Specifications 1.4 phase mannual dimming:110%,100%,75%,50%. 2.Output power: 600W 750W 1000W Super Lumens 3.Good protection of short circuit 600W Dimmable E- ballast Technical information 1.Other power also available:250W,400W,600W,1000W 2.Rated input voltage and frequency:120/240V AC,50Hz-60Hz 3.Working temperature:-30°c- 70°c 4.Power factor:>0.99 5.Current crest factor