XL4015 5A DC-DC Buck Step-Down Voltage Converter Module Adjustable Power Regulator Board with LED Voltmeter

Maintain stable output voltage over a range of input voltages. Useful for a wide range of applications, such as powering 5V USB devices and low voltage electronics from a 12V battery, and many other electronic projects. Constant voltage regulation, suitable for LED strips and modules, but not for raw LEDs Input Voltage: 4-38V DC, Output Voltage: 1.25-36V DC, Max Load: 75W/5A Peak, 50W/3.5A Sustained (whichever is lower, amps or watts) Conversion Efficiency: Up to 96% Dimensions: 66x39x18mm, XL4015 IC, 180KHz Switching Frequency Input must be at least 1.5V more than the output voltage. Applying reverse polarity voltage to the input or output may damage the module