HID BALLAST: A. Overvoltage Protection B. Short Circuit Protection C. Undervoltage Protection D. Overcurrent Protection A. ... , H9, H10, H11, H13, 9004, 9005, 9006, 9007, 880, 881 B:Ballast Function:A. Overvoltage ProtectionB. Short Circuit ProtectionC. Undervoltage ProtectionD ... ProtectionE. Circuit ProtectionF. Waterproof, Anti-dust, Shockproof YY HID BALLAST GOOD QUALITY