DIY Supplies: Electrical  Accuracy Class: 0.1  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.   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: 136g  colour: Photo Color  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 User Manual  Only the above package content, other products are not included.  Note: Light shooting 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.