DUAL SERIESDual Series (120-240V)At a fraction of the weight and size of other dual ballasts, the Dual Series is designed to run two 600W lights at the same time. Simplify your setup by consolidating two ballasts in to one. Like our Flip Series, the Dual Series has a patented 9-sided design to maximize surface area, reducing the need for large, heavy heat-sinks. The Dual Series in not NCCS ready. Like all of our ballasts the Dual Series comes with Random Start technology. Random Start uses an algorithm that will start the ballast within a 0-15 second window. This allows for less initial power draw when using multiple ballasts. ETL listed meeting product safety standards.Runs 2 600w grow lights at once!Diagnostic LEDRandom Start technologyLight weight and compact designComprehensive short-circuit/circuit overheat/lamp failure protectionDimmable lamp function: 100%-75%-50%Strikes both MH and HPS bulbsRuns 110v, 120v, 207v, 208v, 220v, and 240v2 year warrantyInput Voltage: 120/240Vac (10.3A/5.1A)Input Frequency: 50/60HzPower Factor: 0.99THD: 10%Operating Temperature: -30c-50c/-22F-122FDimming: 50%/75%/100%Ballast Size: (600W) 402 x 184 x 87.4mm / 15.8 x 5.2 x 3.44inBallast Weight (600W) 2.75kg / 6.1lbs.Fan Cooled BallastCircuit breaker with reset button