Maintain stable output voltage and limit the output current over a range of input voltages. Great for general voltage conversion, battery charging, solar panels, powering raw LEDs, automotive electronics, battery conversions, micro-controllers, and electronic projects. Input Voltage: 5-38V DC, Output Voltage: 1.25-36V DC, Max Load: 75W/5A Peak, 35W/3A Sustained (whichever is lower, amps or watts) Conversion Efficiency: Up to 96% Dimensions: 61.7x26.2x15mm XL4015 IC 180KHz Switching Frequency Over-current protection Thermal protection LED indicators Input must be at least 2V more than the output voltage Applying reverse polarity voltage to the input or output may damage the module Input and output ground must not be connected together Instructions: https://www.jacobsparts.com/files/DCMOD-J.pdf