RioRand 3-01-0076 Buck Converter (Step Down Module Power Supply Output 1.23V-30V (1 Piece), LM2596 DC-DC)

Input: DC 3V to 40V (input voltage must be higher than the output voltage to 1.5V above can not boost) output: DC 1.5V to 35V voltage continuously adjustable, high-efficiency maximum output current of 3A. Features: All Sanyo solid capacitors, the 36U thickening circuit boards, high-q inductance with output value of high-power LED Indicator dimensions: 45 (L) 20 (w) 14 (H) mm (with potentiometer).