Portable Three Phase Sequence Tester 60V 600V AC with LED and Buzzer for Rotation Indicator Designed to check the phase sequence. With LEDs to show if the phase is open or not, Supports Buzzer indication. Highly reliable, can check a large of 60V to 600V AC three-phase. With Alligator Clips, easily involve the terminals of the control panel, guaranteeing reliability and safety. Small, light and portable, convenient for using. DIY Supplies:Electrical Accuracy Class:0.1 Operation Voltage:60V-600V AC, three phase Limit Support Voltage:2000V/minute (Impulse voltage 4000V) Operation Frequency Range:20Hz-400Hz Limit Time for Continuous Use: 60 minutes maximum at 200V AC 4 minutes maximum at 600V AC Phase Sequence Indicator LED: Green for correct phase sequence, Intermittent Beep Red for reverse phase sequence, Continuous Beep Test Leads: Double insulation, Approx. 80cm cable length Yellow for U phase (L1.R) Green for V Phase (L2.S) Red for W phase (L3.T) Net Weight:189g Colour:As Shown Material:Plastic Size:8 x 6 x 2.4cm Package Contents: 1 x 3 Phase Sequence Tester 3 x Alligator Clips 1 x Pouch 1 x English User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.