ITEM NAME:DC-DC 12V to 5V Mini A type USB Dual Converter Step Down Power Module FE S Dz Description: Casing with epoxy resin sealed and waterproof Non isolated synchronous rectification, High efficiency: up to 96% Reliable, low heat dissipation Overload, over current, low-voltage and over temperature protection, stable performance Specification: Input voltage: DC 12V Output voltage: DC 5V Maximum current: 4A Power Supply Dimensions (L x W x H): 46 x 26 x 14 mm.High efficiency: up to 96%.