The 1,000-watt dual-voltage digital ballast from Xen-Lux is an instant favorite among beginning and professional growers alike. This ultra-high efficiency (99.9% power factor) digital ballast combines soft-starting technology and superb current crest factor (below 1.7) for increased bulb lifespan. It also ensures the bulb maintains maximum brightness throughout its lifecycle. This digital ballast works flawlessly with just about any bulb. It runs High Pressure Sodium (HPS), Metal Halide (MH) and Dual Arc bulbs. The lightweight extruded aluminum housing includes anti-vibration rubber feet. This ballast features extremely quiet, fan-less cooling. The digital voltage unit operates with 120 or 240 volts; it will automatically detect and switch to the correct setting. A heavy-duty 8-foot grounded power cord (3-prong, 110-volt plug) is included. UL-approved, CE Certified and fuse protected. Includes ultra-high efficiency digital ballast (1,000-watt) and USA standard, 3-prong power cord (120 volts).