True-RMS Dual Display 600A Clamp Meter w, Audible Continuity Yes, Safety Rating CAT III 600V, CAT IV 300V, AC Response Calculation TRMS, Maximum AC Current Measurement 600 A, Maximum AC Voltage Measurement 750 V, Maximum DC Voltage Measurement 1,000 V, Parameters Measured AC Voltage, DC Voltage, Temperature (K), Jaw Opening 1.25 in, Jaw Style Clamp On, Calibration Certificate Included cETLus UL 61010-1: 2012, Special Features Built In Voltage Detector, Data Hold Yes, Display Type Backlit LCD