RuoShui 850 Three Phase Indicator cable tracker Rotation Phase Sequence Tester with LED Light Indicator 200V- 400V Voltage Meter Features: 1.One Unit with two functions:Check the phase sequence and indicate the phase is open or not. 2.Safe and reliable:With alligator clips, easily involve the terminals of the control panel, guaranteeing reliability and safety. 3.Wide voltage test:It can check 200V to 480V AC three-phase voltage,high performance. 4.Easy to use:With LED light to show if the phase is open or not,supports buzzer indication. 5.Portable design:Small and light weight,with a carrying bag, convenient to take. Description: This RuoShui 850three-phase rotation tester is designed to check the phase sequence and show if the phase is open or not. 100% brand new and high quality. Specifications: Model:850three-phase rotation tester Operation voltage:200V 480V AC three phase Limit support voltage:2000V/minute (impulse voltage 4000V) Operation frequency range:20Hz400Hz Limit time for continuous use: 60 minutes maximum at 200V AC 4 minutes maximum at 480V AC Phase Sequence Indicator LED: Green for correct phase sequence,intermittent beep Red for reverse phase sequence,continuous beep Test pen and cable length:80cm Size:98x 58x 23mm Item Weight:135g