... Ballast(35W,50W): 1)12V/35W, 12V/50W ,24V/35W,24V/50W *2)America Microchip CPU 3)CE,TUV,E13,E4 certs HID Ballast(35W,50W ... )12V/35W, 12V/50W ... ,24V/35W,24V/50W is availableDescriptionInput Voltage Range DC9V ... and get highly estimated from them. HID Ballast(35W,50W)