Megger DCM320-EN Digital Clamp Meter, 20 Megaohms Resistance, 600V AC/DC Voltage, 400A AC Current Digital meter measures AC current up to 400A, AC and DC voltage up to 600V, and resistance up to 20 Megaohms Clamp jaw for measuring cables up to 27mm in diameter 3-1/2 digit LCD with data hold function Continuity buzzer operates up to 20 Ohms to indicate that current is flowing between two points Safety rated to IEC 61010 CAT III 600 V