HypoTek-HT-Model Electronic Ballast 1000W H.P.S M.H Lamp-Tested-Works!! Power up your grow with the HypoTek-HT-Model Electronic Ballast, a robust 1000W solution designed for high-intensity discharge lamps. Its silver exterior not only adds a sleek, professional look to your setup but also dissipates heat effectively, ensuring optimal performance and longevity. This ballast is engineered for ease of use and efficiency, featuring a user-friendly interface that makes lamp testing a breeze. With its reliable electronic design, the HypoTek ballast is a trusted companion for any indoor gardening enthusiast looking to provide their plants with the ideal growing conditions. Very good overall preowned condition. Works and tested!! See photos.