Fulham Electronic HID Ballast, H8-UNV-175HBC Short Circuit Operation Protection, Open Circuit Opeation Protection, Ignitor Failure Protection Thermal Protection (UNV only), Energy-Efficient Compared to Magnetic, Extended Lamp Life Less Color Shift over time, Type 1 Outdoor Listed, Low Noise Compact Ballast Profiles, Superior Lumen Maintenance, Faster Strike and Restrike times