With a wide input voltage range from 6V to 40V, todown 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 or 80A large current dual MOS tube. Input and output use high frequency low resistance electrolytic capacitor, low ripple, stable output. Wiring is convenient with these large current 30A screw terminals. The buck module has 2 heat sink that could enhance heat dissipation. When there is a between input and output voltage, please decrease power 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 Method: Terminal Short Circuit Protection: Selftorecovery (cannot short circuit for long time) Size: 60 x 53 x 27mm or 2.36 x 2.08 x 1.06inch VOand: Output positive VOto: Output negative andIN: Input positive toIN: 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, notoload CV output constant voltage,CC output constant current Colour:As shown Material:PCandMetal Package Contents: 1 x 300W 20A Buck Converter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1to3cm.