Features:Quickly test whether the brushless motor coil is good or badQuickly test whether the brushless controller good or badQuickly test whether the the brushless motor phase sequence is ABC and abc colorsQuickly test whether the the phase angle is 60 degrees or 120 degreesQuickly test whether the brushless motor hall's good or badSpecifications:Name: Electric Car Scooter Brushless Controller TesterApplicable Machine: 24V/36V/48V/60V/72VWorking Temperature: -20C-50CRelative temperature 80cDimension:10.5x7.5x2.5cmPower: 9V battery(included)Package included:1x Brushless Motor Tester1x Manual in EnglishNotes: 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.