Clamp Meter Audible Continuity Yes Safety Rating CAT III 1000V CAT IV 600V AC Response Calculation TRMS Maximum AC Current Measurement 660 A Maximum AC Voltage Measurement 750 V Maximum DC Current Measurement 660 A Maximum DC Voltage Measurement 999.9 V Parameters Measured AC Current AC Voltage Capacitance Continuity DC Current DC Voltage Frequency Resistance Intrinsically Safe Yes Jaw Opening 1.4 in Jaw Style Clamp On