Features: As normal buck- step down voltage module with over-current for protection; as charger for various battery, for solar battery panels, wind for turbine; as high power LED CC drive module, etc. Indictor indicate current mode of CC/CV & charging status of charging/full-charged. Input voltage for DC 4V-38V; output voltage for DC 1.25V-36V continuously adjustable; output current 5A max; output power 75W max. Protect short-circuit for protection; over-temp for protection. With constant current & constant voltage mode; float volt & charging amp can be set when used as lithium battery charger; high efficiency of 96%; low ripple. Specifications: Module nature: Non-isolated Buck- Module Input voltage: 4-38V (Please try not to exceed 38V as input) Output voltage: 1.25-36V continuously adjustable Output current: 0-, recommended for use within 4.. Output power: It is recommended to use within 75W. If more than 50W, please add heat sink. Working temperature: -40~+85 degrees Working frequency: 180KHz SUNLEPHANT Conversion efficiency: up to 96% (efficiency related to input, output voltage, current, voltage difference) Load adjustment rate: S(I) 0.8% Voltage adjustment rate: S(u) 0.8% Power indicator: Yes Short circuit protection: Yes (limited current 8A) Over temperature protection: Yes (automatically turn off the output after over temperature) Input reverse connection protection: None, (If necessary, please input a large current diode in the input string) Installation method: 2 3mm silk Wiring method: welding, V-IN is input, V-OUT is output Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-3mm error due to manual measurment. Package includes: 1PC x Step Down Power Supply Module