Designed to check the phase sequence. Features LEDs to indicate open phase and buzzer for audible indication. Highly reliable for testing 60V to 600V AC three-phase systems. Includes alligator clips for secure connection to control panel terminals, ensuring reliability and safety. Compact, lightweight, and portable for convenient use. Electrical Accuracy Class: 0.1 Operating Voltage: 60V–600V AC, three-phase Withstand Voltage: 2000V per minute (impulse voltage 4000V) Operating Frequency Range: 20Hz–400Hz Maximum Continuous Use Time: 60 minutes at 200V AC; 4 minutes at 600V AC Phase Sequence Indicator: - Green LED + intermittent beep: correct phase sequence - Red LED + continuous beep: reverse phase sequence Test Leads: Double-insulated, 80cm cable length - Yellow: U phase (L1/R) - Green: V phase (L2/S) - Red: W phase (L3/T) Net Weight: 189g Color: As shown Material: Plastic Dimensions: 8 × 6 × 2.4 cm Package Contents: - 1 × 3-Phase Sequence Tester - 3 × Alligator Clips - 1 × Pouch - 1 × English User Manual Note: The actual product color may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.