1. The multi-functional maintenance tester for electric vehicles is suitable for detecting 24V, 36V, 48V, 60V, 72V brushless controllers, brushless motor coils, internal Hall elements of brushless motors, throttle grips, and differentiating brushless motor angles. 2. The portable multi-functional maintenance tester for electric vehicles is used for quickly detecting the quality of brushless controllers and brushless motors of electric vehicles (including the quality of motor windings and Hall elements). 3. The phase angle is 60 degrees or 120 degrees. 4. This simple and portable testing instrument is a useful tool for electric vehicle manufacturers, controller manufacturers, motor manufacturers, electric vehicle dealers, and electric vehicle after - sales maintenance personnel. 5. As long as there are 5 thin Hall wires and 3 thick main phase wires, a total of 8 wires, the brushless motor can be detected, and the gearless one is continuously variable. 6. For example, the greater the rotation amplitude of the electric vehicle handlebar, the higher the motor speed. 7. The dual - mode brushless Hall controller may not be detected. 8. The differential motor is a high - speed motor. During testing, rotating the wheel (motor) faster may result in better and more obvious testing results. 9. Color: White 10. Material: Metal 11. Package contents: - 1 tester for brushless motor controllers of electric vehicles/electric bicycles/electric scooters 12. Only the above package contents are included, and other products are not typically included. 13. Note: Light and different displays may cause the color of the item to vary slightly from the actual object. The measurement error is usually plus or minus 1 - 3 centimeters.