VOLTEQ HY3030EX is a high current, high voltage regulated DC power supply, and is similar to HY3030E but with built-in over-voltage and over-current protection, ideal for battery charging, DC motors, anodizing and plating applications. HY3030EX has the maximum DC power of 900W. This high quality regulated power supply can be continuously adjustable at 0-30V DC and 0-30A. The unit comes with 2 LED displays, providing accurate and clearly visible readout for the voltage and current value. This unit has toggle switch at the back that allows you to operate it in 110V AC or 220V AC. Retails well over $550. Please email us with any questions!