TRITEST pro rotary field direction indicator. LED display. Display of right and left rotary field via green/red LED. Display of the three phases yes. Display of the phase voltages L1, L2 and L3 via red LED. Frequency 50 Hz - 60 Hz. Voltage 400 V - 500 V AC. Bright, high-performance LED flashlight. Integrated magnet holder and belt clip on the back of the housing. Includes 4 mm test probe set and alligator clip. Measuring circuit category Cat III. Max. voltage measuring circuit category 300 V.