The Triplett Test Equipment True RMS Lo-Z Multimeter, No. MM650, is waterproof and features True RMS readings to measure non-sinusoidal or noisy waveforms accurately. The multimeter offers a variety of measurement features including AC/DC voltage, AC/DC current, AC/DC µA current, resistance, temperature, frequency, capacitance, continuity, and diode test. It also includes a backlit LCD and switch selector dial, Lo Z (impedance) mode for identifying ghost voltages, data hold, peak hold, relative mode, and a built-in flashlight. The rubberized over-molded housing provides impact and drop resistance that is also IP67 waterproof. CAT IV 600V safety rating provides superior resistance to damage from transient over-voltages.