Power Supply Advantage 1.Have complete operating protection function 2.Highly efficient, low ripple, small volume, light weight 3.Double display voltage, current, and high precision 4.Voltage stabilization, current limiting, simple operation 5.Dual voltage input and convenient choice 6.Temperature control fan heat dissipation, low noise 7.Double potentiometer more precise adjustment Your package include 1 * DC Power Supply 1 * Power Cable 1 * Output Line(Gift) 1 * Instruction Book