Clamp Meter, Audible Continuity Yes, Safety Rating CAT III 1000V, CAT IV 600V, AC Response Calculation TRMS, Maximum AC Current Measurement 1,000 A, Maximum AC Voltage Measurement 750 V, Maximum DC Current Measurement 999.9 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 2.0 in, Jaw Style Clamp On