Quantum 400W Digital Ballast, 120/240V Dimmable

The Quantum Series ballast offers you a dimming switch that enables you to run your ballast at the strength you desire. This not only makes it easier to harden off young plants just being introduced to HID lighting, but also allows you to control your footprint and power usage as well. You can increase the power to your ballast as your garden grows and demands more light, and save yourself a substantial amount of money on your power bill over the length of your crop cycle. Run at 100%, 75% or 50% power Strike both Metal Halide and High Pressure Sodium Bulbs Accepts 120v or 240v (Both cords included) Allows 50 Hertz to 60 Hertz Runs 15% cooler than other digital ballasts on the market Has a Power Factor of 99.9% The most stable output frequency of any ballast Higher lumen output than magnetic ballasts Light weight and care free Another key point of these ballasts' is they have no dedicated voltage. Switching between 120v and 240v is as easy as changing the power cords. Both, of course,