AC/DC Digital Clamp Meter, 600A True RMSKlein Tools CL800 is an automatically ranging true root mean squared (TRMS) digital clamp meter that measures AC DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test leads, and temperature via a thermocouple probe. It also features a Low Impedance (LoZ) mode for identifying and eliminating ghost or stray voltages. Features: Automatically ranging true mean squared (TRMS) technology for increased accuracy Test leads