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 96percent , measured at 20A, converting 24V to 12V. It is designed with 75V or 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: 95percent (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 or 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: 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.