Current and Voltage Calibrator Source Current 0 to 24mA DC Current Measurement Range 0 to 50mA DC Current Accuracy +/-(0.01 Percent +1 Digit) Source Voltage 0 to 20V DC Voltage Measurement Range 0 to 20V DC Voltage Accuracy +/-(0.01 Percent +1 Digit) Display Multiline LCD Calibration Certificate NIST Powered By (6) AA Batteries or 100 to 240V Universal AC Adapter Includes 100 to 240V Universal AC Adapter Batteries Calibration Cable Carrying Case Manufacturers Warranty Length 1 yr