Usage Tips:With a wide input voltage range from 6V to 40V, the step- converter can accurately adjust output voltage and current. The efficiency can be up to 96 percent , measured at 20A, converting 24V to 12V. It is designed with 75V/80A current dual MOS tube. Input and output high frequency low resistance electrolytic capacitor, low ripple, stable output. Wiring is convenient with these current 30A screw terminals. The module has 2 heat sink could enhance heat dissipation. When there is a between input and output voltage, please decrease and current. Input Voltage: 6V to 40V DC(10V to 40V is suggested) Output Voltage: 1.2V to 36V DC Output Current: 20A(max.), 15A(suggested) Efficiency: 95 percent (24V to 12V, 20A) Output Ripple: less than equal 50mV Wiring : Terminal Short Circuit Protection: -recovery (cannot short circuit for long time) Size: 60 x 53 x 27mm / 2.36 x 2.08 x 1.06inch VOand: Output positive VO-: Output negative andIN: Input positive -IN: Input negative CV: Output voltage adjustment CC: Output current adjustment EN: Enable, low voltage level shut off output suspension, high voltage level is effective When input and output is common grounded, no-load CV output constant voltage,CC output constant current Colour:As shown Material:PCandMetal Package Contents: 1 x 300W 20A Step Converter Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.