Primary Technical Parameter Output voltage: 0-30V DC Output current: 0-5A Work temperture : 40oC-70oC Empty carry to exhaust : <0.25W MAIN FUNCTION 1.Output constant current adjustable. 2.Output constant voltage adjustable. 3.LED voltage and currrent display. 4.Constant voltage and current operation in individual. 5.Over current protection. 6.MA microamps conversion 7.Current and voltage regulation are smooth and not gears regulation. The advantages of our DC power supply 1.High precision and good technique to protect the product Safety and reliability. We are using advanced SAMSUNG IC according control software to shows. And in order to protect the product Safety and reliability, in software we make the Limit in the shows. 2.Good transformer Our transformer are using good conductor and high effcient magnetic core.So we no need make bigger ,but can satisfied the DC power suppy.