Unbranded 600-Watt HPS and MH Dimmable Digital Grow 1-Bulb Light Lamp Ballast

The Quantum 600W Dimmable Ballast brings quality, efficiency, and high intensity illumination to your garden. With a Power Factor of 99.9%-a highly stable output frequency-the Quantum Dimmable ballast lets you run your lamps at the strength you need, allowing you to control your light spread. Rigorously engineered, it features a resin cased circuit board with a sealed bearing fan so it will run cooler than any other ballast and it's been tested to withstand the extreme atmospheric conditions of virtually...