DROK DC-DC 8-55V to 5V 3A Step Down Voltage Converter, Waterproof Automatic Voltage Regulator 5V, 12V to 5V Volt Buck Converter, Car Auto Vehicle Power supply Module WIDE INPUT VOLTAGE RANGE: DROK 12V to 5V converter can tolerate the widest input voltage range (DC 8-55V) and is with 5V stable fixed output. HIGH-QUALITY CHIP: The step down regulator adopts high -quality and good performance chip and synchronous rectifier technology, high conversion efficiency, up to 85%. Low heat and stable. ADVANCED ENBEDDING TECHNOLOGY: Our electric converter adopts advanced embedding technology, waterproof, dustproof, moisture-proof, shockproof. The converter is suitable for poor working environment, can fulfill your various application. FLAME-RETARDANT SHELL: This 5V regulator owns high quality flame-retardant shell, high temperature resistance, good heat dissipation, which is great helpful for long-term working. SIMPLE WIRING & TINY SIZE: The wiring of our dc dc converter regulator is very simple (Red: IN+ ; Black: IN-; Yellow: OUT-; Black: OUT-) and the size of the regulator voltage is very small (463218mm), which can be installed any place.