A variable voltage regulator to fine tune voltage output in case your vehicle application is not pulling a proper voltage to regulate LED products. With some vehicles there will be an overload of voltage causing our Halo's to quickly burn out from running different voltage's instead of a constant 12v source. The ORACLE Variable Voltage Regulator will help you dial in the exact amount of voltage you need. Product Specs: - 5 Amp Max - Input: 1-27V - Output: 1.25-32V