Amprobe® Clamp-On Meter, AC/DC Digital True RMS, 660 to 1000 A, 660 to 750 VAC, 660 to 1000 VDC, 660 mVAC/mVDC Electrical Rating, 6.6 to 660 kOhm/6.6 to 66 MOhm Resistance, 50 to 500 Hz Frequency, 2 in Jaw, 6600 Count, 3 Digits Backlit LCD Display, 500 ms AC Response, +/-3.5% RDG + 10 Digits AC Current Accuracy, +/-1.5% RDG + 8 Digits at 750 VAC, +/-0.5% RDG + 2 Digits at 1000 VDC Voltage Accuracy, Safety Rating: CAT IV 600 V, CAT III 1000 V, 9 VDC Battery Power Source, 32 to 122 deg F Operating, 11.1 in L x 4 in W x 2.1 in H,