MS5900 Motor and Phase Rotation Indicator is used to test magnetic field direction of three-phase system, phase rotation, motor rotation direction. 4 main functions: rotary field direction, non-contact rotary field indication, motor connection & magnetic field detection With simultaneous indications via LEDs Can be used to determine rotary field by contact or non-contact modes Portable and compact design Product Description: MS5900 Motor and Phase Rotation Indicator is used to test magnetic field direction of three-phase system, phase rotation, motor rotation direction. Without a need to link testing line, the motor rotation direction can be decided by placing this indicator above the motor and aligning it with motor drive shaft. It is durable, reliable and light-weight handheld device, which is neceary tool for those who often install, repair or maintain three-phase system or motor. Product specification: Operating Voltage: 120V~400V AC Current Consumption: ≤20mA Frequency Range: 2Hz ~400Hz Power Supply: 1 x 9V6F22 Battery Product Size: 128mm x70mm x30mm(5" x2.75" x1.18") Product Weight: 168g(0.37lb) Category: CE CAT.III 600V RoHS Packing size: 235*140*50mm Packing weight: 2240g Package include: 1*MS5900 THREE PHASE ROTATION INDICATOR 1*User Manual 1*Alligator clips 1*Test cable