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 20V DC Voltage Measurement Range 0 to 20V DC 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