Greenlee® Electrical Meter SpecificationsMeasurement Types:AC Amperage, AC/DC Voltage, and ResistanceTrue RMS:For accurate measurements when the voltage or current waveform is distorted by non-linear loads.Amperage Measurement:400.0 A, 600 AVoltage Measurement:400.0 V, 600 VDisplay:3-1/2 digit LCDJaw Opening:1.38"Auto Power Off:For longer battery lifeMeasurement Category:Cat III, 600V per UL 3111-1 SKU: GRNL.CM600 Brand: GREENLEE Country of Manufacture: Taiwan Supplier Part Number: GRNLCM600