The Innova DMM Inductive AMP Probe, No. 3347, measures parasitic draw and is designed to work with all digital multimeters. This probe is designed for testing alternator output, starter and battery current draw and all other electrical wiring circuits. The probe features a red/green indicator light that shows power and low battery, easy slide switch for measurement selection, 2' test lead and zero adjuster for calibration. This probe offers an operating range of 0-600A AC/DC.