Function Measuring Range Accuracy DC Voltage 600V +/-1.0% AC Voltage 450V +/-1.2% AC Current 20-200-400A +/-2.0% Resistance 200KOHM +/-1.0% Diode Test YES Data hold YES Buzzer YES Power Supply (AAA)1.5*2 Max. Display 1999 Dimensions 150*63*28mm Weight 160g Standard Accessories Test Leads, Manual.