Product Features AC amperage, AC/DC voltage measurement True RMS for the most accurate measurement where harmonics are present Quick, easy operation Audible continuity and diode tests Data hold to capture measurement Display: 3-3/4-digit LCD (4000 maximum reading) Sampling Rate: 3 per second Overrange Indication: “OL” appears on the display Maximum Conductor Diameter: 26 mm (1.02") Greenlee CM-450 Specifications Amperage Measurement 40, 400, 600 A AC Display LCD, 4000 Count Includes 3 V Standard Button Battery, Test Leads Jaw Opening 1.020 IN Measurement Category CAT III, 600 V Per UL 61010-1 Replacement Part TSG-3 Sure-Grip Test Leads, TC-5 Carrying Case Resistance Measurement 400Ω 4, 40, 400kΩ 4, 40MΩ Standard CAT III, C/US UL Listed, CE Type AC, TRMS Voltage Measurement 4, 40, 400, 600 V AC 4, 40, 400, 600 V DC 400 mV Product Spec Sheet