This adjustable power source is of the pleasing appearance and easy operation.It can continuously regulate the output voltage and output current within certain scopes. In this way, it ensures the accurate power supply to various electronic & electric appliances. ----Input voltage:AC 220v/240v or 110v/120v ----Output voltage :DC 0~30V ----ripple voltage:<5MV ----With LCD display. ----Max. current:5A ----Single-output or dual-output ----With current-limiting protection, and limit-point can be set arbitrarily. ----warranty:2years ----certification:CQC WE ALSO CAN OFFER OEM SERVICE.