This power module belongs to a DC step-down switching power supply. The input voltage should always be the output voltage and there should be at least a V voltage difference. The input power=output power+loss (energy conservation principle) circuit design is perfect, ultra-high efficiency up to 94%, low ripple 200 W DC-DC, high voltage, and high-power step-down module has been newly launched, with a wide voltage input of 860V. 1-36V stepless adjustable output, with a maximum output current of 15A. The is available on the shelf and comes with an aluminum casing as soon as it is taken Color: As Shown Material: PCB Package Contents: 1 x DC-DC Adjustable 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.