Features: 60V High Voltage DC-DC Non-isolated Step Down Module. The module adopts synchronous rectification technology, which greatly reduces rectification loss at the output terminal, thereby improving conversion efficiency and reducing heating of the power supply itself. 1-35V continuously adjustable output voltage by rotating the potentiometer. Short circuit protection, input reverse polarity protection. Includes aluminum shell for fast heat dissipation. Specification: Rectification mode: synchronous rectification Type: non isolated buck module (BUCK) Input voltage: 8-55V (limit 60V, please leave margin) Output voltage: 1-35V continuously adjustable (Please do not exceed this range. The input voltage of the step-down power supply should always be greater than the output voltage and at least 1V pressure difference) Output current: 15A (max), 10A (continuous) (related to input and output pressure difference, temperature, etc) Output power: 100W (good ventilation and natural heat dissipation), 200W (enhance heat dissipation) Working temperature: -10~+85 Operating frequency: 180KHz Conversion efficiency: Max. 94% (related to input, output voltage difference, and output current) Short circuit protection: Yes Reverse polarity protection: Yes Wiring: large current terminal, free welding, IN+, IN-, OUT+, OUT- Aluminum shell size: 70*38*31mm / 2.8*1.5*1.2in Weight: Approx. 83g Package list: 1 x Adjustable Step Down Module 1 x Aluminum Shell Note: Please note that the new type and old type of this product will be sent randomly. Make sure you will not mind before ordering.