This Digital Greenhouse ballast is perfect for your indoor gardening needs. With a maximum wattage of 250, it is suitable for HPS (High Pressure Sodium) lights and can operate on both 120 V and 240 V voltage. The ballast features quiet operation and comes in a sleek blue color. Additionally, it is equipped with advanced electronic technology for optimal performance. This package also includes a brand new bulb to get you started on your indoor gardening journey. Perfect for hydroponics and outdoor living, this ballast is a must-have for any indoor/ outdoor gardener.