Current and Voltage Calibrator Source Current 0 to 24mA DC Current Measurement Range 0 to 50mA DC Current Accuracy +/- (0.075 Percent + 1 Digit) or +/- 3 Digits (Whichever is Greater) Source Voltage 0 to 20VDC Voltage Measurement Range 0 to 20VDC Voltage Accuracy +/- (0.075 Percent + 1 Digit) or +/- 3 Digits (Whichever is Greater) Display 2000 Count Multiline LCD Powered By 9V Battery or 100 to 240V Universal AC Adapter