These state-of-the-art ballasts are manufactured to provide today’s serious grower with maximum flexibility & performance. The Galaxy Select-A-Watt is the preferred dimmable electronic ballast on the market. The Galaxy brand name carries a strong reputation of reliability and performance. Lamps are only dimmable on wattages lower than the specified lamp wattage. A 1000 watt lamp can be dimmed down to 600 or 400 watt. A 600 watt lamp can be dimmed down to 400 watt, but cannot be over-driven to 1000 watts.There are three ways to use the Select-A-Watt feature: It will properly drive a 400, 600 or 1000 watt lamp. For example: Set the switch to 400 watts, insert a 400 watt lamp into your socket and the ballast will operate the 400 watt lamp. The ballast will similarly operate 600 or 1000 watt lamps. The second option is to dim a 1000 watt lamp. Adjust the switch to 400 or 600 watts and the ballast will dim the 1000 watt lamp by 40% or 60%. The Turbo Charge feature will increase the output of a 1000 watt lamp (only) by approximately 10%. You will achieve peak performance, but this may decrease your lamp life. 5 year warranty. The Phantom Ballasts dimm between 600/750/1000 Watt, The 1500 Watt Galaxy is not dimmable.

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