The Greenlee DM-510A-C True RMS Digital Multi-Meter (AC/DC)(calibrated) is part of Greenlee's premium collection of tools and accessories. This digital multi-meter is designed to measure voltage, current, resistance, and frequency. It also tests continuity and diodes, and comes with a backlit LCD with 6000 count display, 2 voltage detection modes, and a BeepJack that warns when test leads are incorrectly inserted in current measurement terminals. It has manual and automatic range selections, a relative offset mode to see changes in the measurements, and an optional USB/RS-232 interface DMSC-2U for direct-to-PC logging. This model comes with (2) 1.5v AAA batteries, bead temperature probe, test leads, and a protective boot.