Fangrui Product Details 1. Sm852b 3 Phase Rotation Tester Indicator Detector Meter(orange)<br> 2. It Is Used To Measure The Opening Phase Condition And Order Through Led And Buzzer.<br> 3. Measuring Frequency Range:20hz~400hz<br> 4. Operational Voltage:60v-600v (3 Phase Ac)<br> 5. Limit Support Voltage: 2000vminute (impulse Voltage 4000v)<br> 6. Limit Time For Continuous Use:<br> 7. - 60 Minutes Maximum At 200v Ac<br> 8. - 4 Minutes Maximum At 600v Ac<br> 9. Test Leads: Double Insulation, With 67cm Length (approx.)<br> 10. One Unit With 2 Functions: The Instrument Was Designed To Check The Phase Sequence, And At The Same Time It Has Leds To Show You If The Phase Is Open Or Not.<br> 11. Alligator Clips: They Can Easily Involve The Terminals Of The Control Panel To Be Tested, Guaranteeing Reliability And Safety.<br> 12. Highly Reliable: It Can Check A Large Range Of 60v To 600v Ac Three-phase. The Instrument Guarantee High Reliance And Performance.<br> 13. Functional Design: Small, Light And Portable. It Was Designed To Facilitate The Operation To The Maximum.<br> 14. Dimensions: 85x64x23mm(approx.)