Quantum ballasts: The Quantum Series Lighting is the only ballast that is FULLY compliant with Part 18 of FCC rules and regulations. This device has gone through rigorous testing in lab facilities that replicate the most extreme atmospheric conditions. This ballast can withstand the high heat and humidity that any garden can throw at it. Heat has always been the enemy of any gardening situation. We have designed our ballast with a resin cased circuit board that has been placed in conjunction with a sealed bearing fan. This combines the best of both worlds with the end result being a ballast that runs 15% cooler than any other digital ballast available. As with all electronics, the cooler they run, the longer they will last. 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, are included with your ballast. There is no need to purchase any additional equipment or change any wiring.