The tester provides three functions in one unit, including open phase, phase sequence and motor rotation indication. This tester is ideal for installing conveyor lines, pump systems and interconnected drivers. The EPM3 is two measurement devices. One half measures the phase sequence of a 3-wire system using the power of the system under test. Using lamp indicators, it will indicate the 3-phase sequence or it will indicate an open phase situation. The other half of the EPM3 measures 3-phase motor rotation on an unpowered motor using the EPM3's internal 9 volt battery. The unit will indicate whether the motor shaft has clockwise or counter-clockwise rotation. Features: • Identifies 3-phase sequence and open phase check • Motor shaft rotation • Battery operated • Meets EN61010 safety requirements • Supplied with three CAT III rated large alligator clips and color coded test leads.