The XBF-2 allows growers the ability to run up to two 1000w lights with one ballast. It's built in 24-hour timer allows the user to set a separate timing cycle for each light. This unit is the only ballast flip box that turns the power to the ballast off using a built in time delay feature before switching power to the other reflector. This operation provides for many years of reliable and trouble-free use. The XBF-2 is the only ballast flip box that works with all popular digital and magnetic ballasts. The XBF-2 has a built-in resettable 15 amp circuit protector and is rated at 15 amps @ 120 volt. 5 year no hassle warranty.