Attributes . Measures Up to 400 A AC, Large 1.0" Jaw Opening, Thin Jaw Profile for Easier Wire Measurement in Panels or in Bundles, Wide Voltage Range to 600 AC/DC Volts, True-RMS for Accurate Measurement in All Applications, Built-in LED Work Light, Cat III 600 V for Increased Safety, Black on White Display with Backlight for Easier Reading, Rugged Over-Molding Increases Durability and User Grip. . Names