they are also UL listed for safety...most digital ballast dont have same accreditation

HTG Supply - Digital Greenhouse 1000 Watt HPS & MH Ballast

1000 watt digital ballast hps n mh $269

for $90 more u can get a reflector and hps and mh bulbs!!!

HTG Supply - Digital Greenhouse Ultimate 1000 watt HPS & MH Grow Light
Digital Electronic 1000 Watt HPS & MH Ballast with Socket/Cord Set

* The newest, latest and greatest technological advance in grow lights. This is THE future of Grow Lights!
* Brighter
* Reduces Energy
* Increases Lamp Life
* Lightweight + Silent + Low heat

As seen in hobby and professional growers magazines across the country.



Manufactured by Digital Greenhouse. Donā??t be fooled by other inferior products



This is a premium quality high output digital electronic ballast made specifically for horticultural use. Others sell digital electronic ballasts made for commercial lighting applications which DO NOT operate at normal output levels. These "other" ballasts are made for one thing: saving electricity. In the process, they sacrifice LIGHT OUTPUT for ENERGY SAVINGS. They simply do not run the bulb to itā??s full potential. Plant growth is directly related to the amount of light they receive. If your plants receive less light, they will not grow as well as they should. With this High Output Digital Electronic Ballast from Digital Greenhouse you still obtain substantial energy savings AND experience HIGHER LIGHT OUTPUT from your 1000 watt bulbs than other digital electronic ballasts. This means you will achieve MORE OVERALL PLANT GROWTH and HIGHER PLANT YIELDS.



This is a HIGH OUTPUT DIGITAL ELECTRONIC BALLAST that operates both 1000 watt High Pressure Sodium and 1000 watt Metal Halide Lamps