Complete with a full range of diagnostic capabilities including phase sequence, power and power factor, total harmonics distortion and individual harmonics, inrush current and low pass filter, the Amprobe ACDC-54NAV Navigator Clamp On Meter serves as a first line of defense for power monitoring and verifying system conditions before deploying more specialized tools -- or incurring additional costs. Rated CAT IV 600 V/CAT III 1000 V, these clamp on meters offer a new innovative navigation system that eliminates confusing push buttons, and replaces them with a single joystick.