ITEM NAME:1 * Converter Voltage Regulator DC-DC Buck Step-down 4-38V 1.25-36V 5A IOB Best Descriptio n Description: Module Highlights: 5A High-Power, High-Efficiency, Low-Ripple Band Power Indicator Is Presented With Radiator Fin!!! Module Performance And Features: Module Nature: Non-Isolated BUCK Module Input Voltage: 4-38v (Please Try Not To Input More Than 38V) Output Voltage: 1.25-36v Continuously Adjustable Output Current: 0-5a, Recommended To Be Used Within 4.5a. Output Power: It Is Recommended To Use Within 75W, And Heat Sink Should Be Added If It Exceeds 50W. Specifications: Operating Temperature: -40~+85 ℃ Operating Frequency: 180KHz Conversion Efficiency: Up To 96% (Efficiency Related To Input And Output Voltage, Current And Voltage Difference) Load Adjustment Rate: S (I) ≠¤0.8% Voltage Adjustment Rate: S (U) ≠¤0.8% Power Indicator: Yes Short Circuit Protection: Yes (Limiting Current 8A) Overtemperature Protection: Yes (Automatically Shut Off Output After Overtemperature) Input Reverse Connection Protection: No, (If Needed, Please Input Large Current Diode In Series) Installation: 2 3mm Screws Connection Mode: Welding, V-In For Input, V-Out For Output Module Size: 54mm Long, 23mm Wide And 18mm High Package Included: Step-Down Module Note: 1.Due To The Manual Measurement And Different Measurement Methods, Please Allow 2-3mm Deviation. 2.Please Be Reminded That Due To Lighting Effects And Monitor'S Brightness/Contrast Settings Etc, The Color Tone Of The Website'S Photo And The Actual Item Could Be Slightly Different. Whatever the ending's perfect or not, you can't disappear from my world 1 * Converter Voltage Regulator DC-DC Buck Step-down 4-38V 1.25-36V 5A IOB Best.Module Highlights: 5A High-Power, High-Efficiency, Low-Ripple Band Power Indicator Is Presented With Radiator Fin! Module Nature: Non-Isolated BUCK Module. Power Indicator: Yes. We'd like to settle any problem in a friendly manner.