1.WIDELY USEDHeavy Duty Truck Car Power Reducer Converter for Auto Car Truck Vehicle Boat Solar System Golf Cart Club Car etc. 2.HIGH QUALITY: Wide range of voltage input, a wider range of use, input voltage in the DC17-55v range can be used normally, the use of intelligent chip assembly, with over voltage / under voltage / overload / low load / short circuit / overheat intelligent protection function, can be in -40 ° C ~ 80 ° C range of safe and reliable work 3.PROCESS: Aluminum heat sink housing in one piece, aluminum housing with epoxy potting, 100% waterproof, dustproof, shockproof protection and better heat dissipation. IP67 waterproof aluminum housing makes the converter ideal for a wide range of applications, including vehicles, security systems, hospital equipment, telecommunications, etc. 4.PARAMETERS: Input voltage: wide range input DC17-55V, input current: 20A (max); output voltage: DC 12V 20A 240W 5.AFTER-SALES SERVICE: We promise 30 days money back guarantee