KW3-392CVA is a type of Lucky Light three-way, high frequency ballast. It has two outputs, which can be used to power both a high-gain and a low-gain lamp. The ballast is designed to reduce flicker, minimize running noise, and offers energy savings compared to older magnetic ballasts. It is also designed to reduce lamp failure, extend lamp life, and also ensure compatibility with most types of T5, T8, and T12 fluorescent lamps.