1. Simple Operation: The 3phase rotation tester adopts the VC850C panel design with a clear display. The nonmeasurement clamp design ensures safety and reliability, offering a userfriendly range for easy operation. This rotation tester is suitable for various scenarios, including power maintenance, circuit checks, household use, industrial enterprises, and factory applications. 2. Functionality: The 3phase rotation tester is multifunctional and can be used for phase detection (positive phase, reverse phase, missing phase), live line inspection, simple power testing, fault location, and line maintenance. 3. Audible Alerts: When detecting a positive phase, the device emits intermittent short beeps; for a reverse phase, it produces a continuous long beep. The battery indicator light turns on when powered. 4. Working Parameters: The clamp wire diameter range is 1.5 mm to 16 mm. Features include phase detection (positive phase, reverse phase, missing phase), live line inspection, basic power testing, fault location, and line . Powered by DC3V using 2 x AA batteries (not included), providing approximately 70 hours of continuous use.