The GloGreen 250W is a Digital Ballast for High Intensity Discharge HID Lamps that features ground breaking technology for unparalleled electrical efficiency and lighting performance. The Digital HID DHIDTM Ballast is Micro-processor Controlled, creating a new standard of excellence in HID lighting; offering the highest efficiency while producing minimal heat. GloGreen DHIDTM Ballasts are a simple, value-added replacement for existing conventional core and coil magnetic and lower efficiency electronic ballasts providing immediate cost saving opportunities for any HID lighting installation.