Check the listing for details. XL4015 36V 5A DC Buck Step Down Voltage Converter Constant Current Power Module. Condition: New. Listed at 4.69 USD. 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 togetherInstructions: https://www.jacobsparts.com/files/DCMOD-J.pdf Orders under $10 ship without tracking If you need tracking on orders under $10 then pay the extra $1.99 for package service Freight Forwarders and US Territories (except PR): Orders under $10 will be canceled unless the $1.99 shipping option is selected at checkout