One Working Apollo Horticulture Dimmable Ballast, Only used for 2 seasons, In excellent condition. Please refer to the pictures to see exactly what you'll be receiving. Open to reasonable offers. The Apollo Horticulture 1000 watt ballast gives you up to 30% more lumens than magnetic ballasts. Features of the APL1000 Apollo Horticulture 1000 Watt Ballast 110 - 240V input: plug it into any regular wall socket anywhere or use 240V to save a bit on power costs Digital dimmable ballast: run ballast at 100%, 75% or 50% to save on electricity costs when you don't need full power CE certified and ETL listed: quality assured Short circuit protection: prevents damage to components or fire Fast lamp ignition: lights bulbs in 1-2 minutes max Stable light output: constant lamp voltage means bulbs do not flicker Resin covered circuit board with sealed cooling fan: ballast runs 15% cooler than competitors