DescriptionThis versatile, compact, self-contained LM2596 DC to DC Power Module is useful in a myriad of situations to generate a lower, regulated DC voltage output from a higher voltage supply. It has much higher efficiency and lower heat dissipation than traditional linear regulator designs. Great for electronic products or DIY.Features- Color: As shown.- Material: Metal.- Size:45 x 20 x 14 mm (with potentiometer).- Input: DC 3 V to 40 V (input voltage must be 1.5 V higher than the output voltage, no boost).- Output: DC 1.5 V to 35 V (voltage is continuously adjustable, maximum output current is 3 A).- All use solid-state capacitors, 36 u thickening circuit boards, high-quality inductance with LED indicator output.- Steps: connect to power source, adjust the swirl button on the blue potentiometer and monitor voltage with multimeter to get the needed voltage (The factory have tested these at max voltage so they are very high by default, takes about 15-20 turns CCW before the voltage starts ramping down).