The input common-mode inductor greatly reduces the impact of input power ripple and achieves low ripple output. Cooling Fan - This adjustable power converter is equipped with a temperature controlled cooling fan. Comes with a large heat sink to keep it cool when it overheats. LCD display - The module status reader adopts LCD color screen design, which is clear and convenient. Protection - With external temperature protection, input overvoltage protection, input undervoltage protection, output overvoltage protection, output overcurrent protection, output overpower protection, overtemperature protection, timeout protection, overcapacity protection and overenergy protection. Colour:As Shown Material:ABS Package Contents: 1 * Buck Module Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.