The Greenlee DML-430A Data-Logging True RMS Digital Multi-Meter (AC/DC) is part of Greenlee's premium collection of tools and accessories. This digital multi-meter is designed to measure voltage, current, resistance conductance, frequency, and capacitance. It also tests diodes and continuity, and has a datalogging capability of 87,000 single channel (43,000 dual channel) measurements. It has an optional USB interface DMSC-9U to transfer data to any PC, a true RMS for accurate readings on complex waveforms, a low impedance on autocheck mode, and a backlit LCD display with 2 readsing and 10,000 count resolution. It has a BeepJack feature that warns when the test leads are incorrectly inserted, and 2 temperature measurements using Type K Thermocouples. It comes with a 9v battery, a bead temperature probe, test leads, a protective boot, and a convenient carrying case.