Testo 755-2 Current Voltage 1000V Continuity Phase Sequence Tester selects the correct meter configuration in order to save time and ensure accuracy by eliminating human error. The Testo 755-2 features 3 phase sequence checking with motor rotation indication, single lead testing with audible indication, continuity, interchangeable measuring tips, a built-in flashlight, detector of polarity on DC circuits, and more.