The detection effect is more intuitive, through the transformation of the circular arrangement of lights, distinguish brushless controller is 120 degrees or 60 degrees phase angles and the fault of the brushless controller. Using one switch to turn on/off, quickly detect safety and convenience. Built-in industrial-grade chip, anti-statics, strong anti-electromagnetic interference, low-temperature resistance. There is a self-test function to check that the car itself has no quality problems. Suitable for 24V/36V/48V/60V/72V two-wheeled or three-wheeled electromobiles., Manufacturer: Ounfhtrttk