This high-power density, metal case LED Driver family is our Constant Current and Constant Voltage design making it unique as a Constant Power LED Driver. The input voltage of these models ranges from 120-277 Vac as well as 347-480Vac. With power ratings offered of 400W, 500W, 600W, and 680W, "The Arbiter" is a very high-power density LED Driver. It also has an output range of 800-5000mA, is UL Listed and comes with several unique features. These options include Dim-to-off, 0-10V, PWM & Timer dimming capabilities and programmable output current. Suitable for Dry, Damp and Wet locations, this model was specifically made for Horticultural growing applications as a Grow Light LED Driver.