Features: Quickly test whether the brushless motor coil is good or bad Quickly test whether the brushless controller good or bad Quickly test whether the the brushless motor phase sequence is ABC and abc colors Quickly test whether the the phase angle is 60 degrees or 120 degrees Quickly test whether the brushless motor hall's good or bad Specifications: Name: Electric Car Scooter Brushless Controller Tester Applicable Machine: 24V/36V/48V/60V/72V Working Temperature: -20C-50C Relative temperature 80c Dimension:10.5x7.5x2.5cm Power: 9V battery(included) Package included: 1x Brushless Motor Tester 1x Manual in English Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.