About this item Input: DC 3-40 V (input voltage must be 1.5 V higher than the output voltage, no boost). Output: DC 1.5-35 V voltage is continuously adjustable, maximum output current is 3 A. Easy work: Conveniently adjust the output voltage accurately with a mini screwdriver. Features: Thickened circuit boards, short circuit and over-temperature protection. Application: Widely used for DIY mobile power, monitor power supply, power buggies, communications equipment supply, etc. Dimensions: 5.39 x 3.98 x 2.32 inches.