Features [ALUMINIUM HOUSING] The voltage regulator board adopts aluminum housing, provides good protection for the indoor circuit board, has good heat dissipation performance, could extend the service life. [HIGH EFFICIENCY] Our DC to DC step-down transformer ensures high conversion efficiency of up to 96%, very convenient. [WIDE APPLICATIONS] Our step-down converter can be widely used for vehicles, security systems, hospital equipment, telecommunications, electrical equipment, LED light bars, motors, security equipment, etc. [SAFETY PROTECTIONS] Built-in over-voltage, under-voltage, overload, overheating and short circuit protections, highly safe and reliable use. [FULLY SEALED] Fully sealed with epoxy resin, DC buck module is IP67 waterproof, dustproof, shockproof and more stable to use. Specification: Item Type: Buck Converter Shell material: aluminium. Coating material: epoxy resin Input voltage: 24 V (15-36 V). Output voltage: 12 V. Output voltage: 3A. Output power: 36W Operating temperature: -20°C to 80°C Conversion efficiency: 96% Waterproof level: IP67 Package list: 1 x Buck converter. Package List 1 x Buck Converter