Martindale PSI4300 Non Contact Phase Sequence Indicator

Using inductive crocodile clips, the Martindale PSI4300 Non Contact Phase Sequence is a unique rotation indicator. Bright green LEDs provide a visible primary indicator of anti-clockwise phase rotation, further increasing user safety. This phase rotation tester can be used on both insulated and uninsulated conductors. In strong ambient light, it features a "Enhanced Brightness" switch that brightens the indicator. Clockwise and anti-clockwise rotation is indicated by a combination of buzzer tones and rotating LEDs.