Features:_x000D_ _x000D_ Fast and accurate measurement results. _x000D_ Open phase indication and phase rotation indication 2 functions. _x000D_ Checks open phases and identifies 3 phase sequence condition. _x000D_ With simultaneous indications via LEDs and audible buzzer sound. _x000D_ Indicates direction of the rotation. _x000D_ Ensures the object being tested is not damaged from incorrect wiring. _x000D_ Portable, compact design and meet the IEC?348 electrical safety standards. _x000D_ _x000D_ Specifications:_x000D_ Working Voltage: 60V~600V (AC, three phase)_x000D_ Continuous Use Time: 60 minutes at 60V AC; 4 minutes at 600V AC_x000D_ Working Frequency Range: 20Hz?400Hz_x000D_ Maximum Withstand Voltage: 2000V/min (impulse voltage 4000V)_x000D_ Test Leads: Double insulation_x000D_ Test Lead Length: Approx. 1meter/3.3ft_x000D_ Protection Level: 2000V_x000D_ Operating Temperature: ?10~60_x000D_ Size(L x W x D): Approx. 8.3 x 6.5 x 2cm/3.27 x2.56 x 0.79in_x000D_ Weight: 253g(approx.)_x000D_ _x000D_ Package Includes:_x000D_ _x000D_ 1 x Tester _x000D_ _x000D_ 3 x Test Leads with Clips _x000D_ 1 x Bag