Description: Feature:MS5900 three phase phase sequence tester, it is used to detect magnetic field direction, phase sequence rotation, motor rotation direction, etc. three-phase system. It can detect the direction of the rotation field, non-indication of the rotation field, motor connection and magnetic field detection. No need to connect the test lead, just place the indicator over the motor and align it with the motor shaft to determine the direction of rotation of the motor. Fast and accurate measurement. Indicate the phase orientation (clockwise or counterclockwise). With simultaneous LED indications, you can observe the station of the device in real time. Portable and compact design, easy and convenient to carry and use. Specifications:Item Type: Three Phase Rotation MeterModel: MS5900Applicable Voltage Range: 120-400V ACfrequency Range: 2Hz-400Hz Power: 1x 9V6F22Power Supply: 3xAA Battery (Not Included)Material: PlasticSize: 128x70x3 0mm/5.03x2.7x1.1in Color: BlackQuantity: 1PC Note:Transition: 1cm=10mm=0.39inchPlease allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 x Three Phase Rotation Meter3 x Testing Wire3 x Clip1 x Storage Bag1 x User Manual