Southwire® MaintenancePRO™ Smart Clamp Meter, Auto-Ranging, 1000 VAC/VDC, 1000 A Electrical Rating, 50 MOhm Resistance, 10 MHz Frequency, 1-1/2 in Jaw, 5000 Count, Backlit LCD Display, +/-2.5% + 5 Digits AC Current Accuracy, +/-2.5% + 5 Digits/3% + 8 Digits Voltage Accuracy, Safety Rating: CAT IV 600 VAC, CAT lll 1000 VAC, 9 VDC Battery Power Source, 41 to 104 deg F Operating, 10.3 in H x 3.3 in W x 1.7 in D Dimensions