Klein Tools CL700 electrical tester is an automatically ranging true root mean squared (TRMS) digital clamp meter that measures AC current via the clamp, and 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. Klein Tools’ test and measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development of meters loaded with innovative, time-saving features. Clamp Meter with automatically ranging true mean squared (TRMS) technology for increased accuracy Electronic tester's clamp measures AC current and its thermocouple probe measures temperature Test leads measure AC/DC voltage, resistance, continuity, frequency and capacitance and tests diodes Low Impedance (LoZ) mode for identifying and eliminating ghost or stray voltages CAT IV 600V, CAT III 1000 V, class 2, double insulation safety rating