If delivers a current of any value between 1-100 MA (500 Volts Max.) in a constant current mode, and a voltage of 0.500 Volts (100mA MAX.) in constant voltage mode. The range control potentiometer makes the output adjustable over the entire range of the unit. It has line and load regulation ± 0.5% and rapple less than 10 mV. All supplies are short circuit and overload protected. Range 0-500 volts & 0-100 mA (with Two Digital Meters)