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