Features: The phase tester is used to measure the opening phase condition and order through LED and buzzer. With high performance, the phase tester can check a large of range of AC three-phase(60V~600V). 3-color double insulation test leads, with approximately 1 meter length. Equipped with 3 alligator clips to involve the terminals of the control panel to be tested, guarantee reliability and safety. The tester is small, light and portable, it is designed to facilitate the operation to the maximum. Design with lanyard for hanging on wrist to avoid the tester from falling. Specifications: Material: ABS Operating Voltage: 60~600V AC (3 Phase) Limit Support Voltage: 2000V/minute (impulse voltage 4000V) Operating Frequency Range: 20~400Hz Limit time for Continuous Use: 60 minutes at 60V ACV, 4 minutes at 600V AC Item Size: 85 * 64 * 23mm / 3.35 * 2.52 * 0.91in Item Weight: 187g / 6.61oz Package Weight: 221g / 7.80oz Package Size: 17 * 11 * 5cm / 6.69 * 4.33 * 1.97in Package List: 1 * 3 Phase Rotation Tester 3 * Alligator Clip 1 * Carrying Case 1 * Manual (English)