Martindale PSI4000 Three Phase Sequence Indicator

Using inductive crocodile clips, the Martindale PSI4000 Three Phase Sequence Indicator allows for the non-contact detection of phase rotation. The unit's LEDs will clearly indicate whether the phase rotation is clockwise or counterclockwise once the crocodile clips are placed around the conductors. The three phase sequences for motor installs and repairs can be immediately identified with its help. The PSI4000 phase rotation tester features a button to increase the LEDs' brightness, enabling phase sequence visibility under any lighting circumstances. It may be used on both insulated and non-insulated wires. The Martindale PSI4000 also contains an audible indication of rotation and a magnetized back that makes it convenient to test without using your hands by attaching it to a metal surface. To save battery life, a "Auto Off" feature kicks in after five minutes of no detection.