Upgrade your grow light system with the Quantum QT400 400 Watt Digital Grow Light Ballast. This digital ballast is suitable for High Pressure Sodium (HSP), Metal Halide (MH), and Switchable (HPS/MH) bulbs. With dual-voltage, multi-wattage, and multi-lamp input features, you can easily customize your lighting setup to fit your plants' needs. Plus, the ballast is generator ready, making it perfect for indoor and outdoor use.

Crafted from durable metal and featuring a white/silver color, this Quantum ballast measures 17.5 inches in length, 3.2 inches in height, and 7.1 inches in width. It weighs 7.7 pounds and has a voltage of 120V. With dimmable capabilities and a range of features, including compatibility with Hydroponics systems, this Quantum ballast is a must-have for any serious gardener.