1 Set Portable Sequence Tester SM-852B 60V - 600V AC 3 Phase Sequence Sequence Rotation Indicator Tester 20Hz-400Hz Features:Fast and accurate measurement of results. Open phase indication and phase rotation indication 2 functions. It checks the open phases and identifies the state of the 3-phase sequence. With simultaneous indications by LEDs and audible buzzer sound. Indicates the direction of rotation. It ensures that the object under test is not damaged due to incorrect wiring. Portable, compact design and meet IEC-348 electrical safety standards. Specifications:Operating voltage: 60V - 600V (AC, three-phase)Continuous use time: le; 60 minutes at 200V AC; Le; 4 minutes at 600V ACnvné Frequency Range: 20Hz-400HzMaximum Withstand Voltage: 2000V/min (4000V Pulse Voltage)Test Leads: Double Insulated Test Lead Length: Approx. 1 Meter/3.3ftProtection Level: 2000V Working Dimension: -10° - 60°Size (L*W*D):8.3x6.5x2cm/3.27x2.56x0.79inWeight: 253g (Approx.)Package Included:1 x Tester3 x Test Leads with Clips1 x Bag1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow.2) payment must be made within 3 days of placing the order.3) if you are unable to check out immediately after the listing ends, please wait a few minutes and try again, payments must be completed within 3 days. About Shipping1.