SM852B 3 Phase Rotation Tester Indicator Detector Meter (Orange) 1. Used to measure phase sequence and open phase condition via LED and buzzer indication. 2. Measuring frequency range: 20Hz to 400Hz. 3. Operational voltage: 60V to 600V AC (3-phase). 4. Withstand voltage: 2000V for one minute (impulse voltage 4000V). 5. Maximum continuous use time: - Up to 60 minutes at 200V AC - Up to 4 minutes at 600V AC 6. Test leads: Double-insulated, approximately 67cm in length. 7. Dual function design: Capable of checking phase sequence and indicating open phase conditions using LEDs. 8. Alligator clips: Designed for secure connection to control panel terminals, ensuring safety and reliability. 9. Reliable performance across a wide input range of 60V to 600V AC three-phase. 10. Compact, lightweight, and portable for convenient operation. 11. Dimensions: Approximately 85 x 64 x 23mm.