This three-phase rotation tester is designed to check the phase sequence and show if the phase is open or not.Features:One Unit with two functions: check the phase sequence and indicate the phase is open or not.Safe and reliable: with clips, easily involve the terminals of the control panel, guaranteeing reliability and safety.Wide voltage test: it can check 60V to 600V AC three-phase voltage, high performance.Easy to use: with LED light to show if the phase is open or not,supports buzzer indication.Portable design: small and light weight for easy carrying.Specifications:Material: plastics+metalOperation voltage: 60V600V AC three phaseLimit support voltage: 2000V/minute (impulse voltage 4000V)Operation frequency range: 20Hz400HzLimit time for continuous use:60 minutes maximum at 60V-AC4 minutes maximum at 600V-ACPhase Sequence Indicator LED:Green for correct phase sequence, intermittent beepRed for reverse phase sequence, continuous beepItem size: 85 * 64 * 23mm / 3.3 * 2.5 * 0.9inItem weight: 120g / 4.2ouncePackage size: 120 * 100 * 50mm / 4.7 * 3.9 * 2.0inPackage weight: 200g / 7.1ouncePacking List:1 * Phase Indicator