Features Accurate measurement -- Fast and accurate measurement results Ensures that the tested object is not damaged by incorrect wiring. Indication function -- Open phase indication and phase rotation indication 2 functions. With simultaneous indications via LEDs and sound buzzer. Indicates the direction of rotation. Application -- Checks open phases and identifies the 3-phase sequence condition. EASY TO CARRY - Portable and compact design and meets IEC-348 electrical safety standards. QUALITY SERVICE -- Our goal is to serve our customers wholeheartedly. If you have any questions, please feel free to contact us, we will reply you within 24 hours! Specifications: Operating voltage: 60V ~ 600V (AC, three-phase) Continuous use time: ≤60minutes at 200V AC; ≤4 minutes at 600V AC Working frequency range: 20Hz-400Hz Maximum withstand voltage: 2000V/min (pulse voltage 4000V) Test cords: double insulation Test lead length: approx. 1 meter/3.3 feet Protection level: 2000V Operating temperature: -10℃~60℃ Size (l*w*d): 150*50*20mm/5.9*2*0.8in Weight: 253g (approx.) Package includes: 1 x tester. 3 x Test Lanyards with Clips 1 x bag. Package List