Features Voltage Converter: This DC buck converter comes with a wide voltage input range of DC 6-40V, this buck converter can achieve continuous regulation of DC 1.2-35V. Easy To Adjust: The efficiency of the regulator board is up to 96%, and the adjustment potentiometer largely simplifies the process of increasing and decreasing. Stable Operation: The adjustable buck power module is equipped with a heat sink to enhance heat dissipation, while having low ripple and stable output, safe and reliable. Practical Use: DC buck regulator is practical and can be used for high-power LED constant current drive, lithium battery charging, 4V, 6V, 12V, battery charging, etc. Easy To Install: DC to DC buck converter is easy to use, light weight, small size, 2 voltage regulator modules are very easy to install. Specification: Item Type: DC to DC Buck Converter Material: PCB Input Voltage: DC6-40V Output Voltage: 1.2-35V DC continuously adjustable for a long time below 32V, suitable for applications where the input voltage is higher than the output voltage and cannot be boosted.  Output Current: 20A maximum, within 15A for a long time. Current Limiting Range: 0.2-20A adjustable. If the module exceeds 65 degrees, please add a fan.  Minimum Dropout Voltage: 3V Working Frequency: 150KHZ Conversion Efficiency: Up to about 96%. The efficiency is related to the pressure difference and the use environment.  Output Ripple: About 50mV ripple without no noise. 20M bandwidth, whihc is for reference only. Measured 24V input.  Operating Temperature: -10℃ to +75℃.  Potentiometer Adjustment Direction: Clockwise to increase, counterclockwise to decrease.  Output Short Circuit Protection: Yes, instantaneous protection and constant current, and currently set constant current value cannot be short circuited for a long time.  Wiring Method: Terminal Block Package List: 2 x DC to DC Buck Converter Note: Scope of Application: For high power LED constant current drive, lithium battery charging, 4V, 6V, 12V, 14V, 24V battery charging, NiCd NiMH battery and battery pack charging, solar panels, wind turbines. Package List 2 x DC to DC Buck Converter