Designed to check the phase sequence. With LEDs to indicate open phase conditions and support for buzzer indication. Highly reliable, capable of testing AC three-phase voltage from 60V to 600V. Equipped with alligator clips for easy connection to control panel terminals, ensuring reliability and safety. Compact, lightweight, and portable for convenient use. DIY Supplies: Electrical Accuracy Class: 0.1 Operating Voltage: 60V–600V AC, three-phase Withstand Voltage: 2000V/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 for correct phase sequence with intermittent beep Red LED for reverse phase sequence with continuous beep Test Leads: Double insulated, approximately 80cm cable length Yellow lead for U phase (L1/R) Green lead for V phase (L2/S) Red lead for W phase (L3/T) Net Weight: 189g Color: As shown Material: Plastic Size: 8 x 6 x 2.4cm Package Contents: 1 x 3 Phase Sequence Tester 3 x Alligator Clips 1 x Pouch 1 x English User Manual Only the items listed above are included; other products are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement tolerances may vary by +/- 1–3cm.