The BK Precision 1715A220V Single-Output Digital DC Power Supply, 60V/2A, 220VAC Line Input includes two LED meters, which regulate the output current and voltage. This model can be connected in series to supply more voltage, or they can be connected in parallel to supply more current. A cooling fan helps the 1715A-220V operate continuously at full load without overheating, and built-in overload and reverse-polarity protection helps prevent damage to the model and the device under test.