Material: Durable metal and plastic construction for longlasting use. Easy Installation: Direct replacement for old or damaged main circuit board controllers; designed for straightforward fitting with existing components. Professional Manufacturing: Precision manufacturing to deliver stable performance and reliability. Compatibility: Specifically designed for Ninebot F20F30F40 electric scooters, ensuring a fit and full functionality. Use scenario 1: Replacing a faulty controller on a Ninebot F20F30F40 to restore normal scooter operation after controller failure. Use scenario 2: Routine maintenance replacement in a fleet of Ninebot scooters to minimize downtime and maintain dependable performance. Use scenario 3: Spare part for shops or service centers serving Ninebot customers, enabling quick repairs and consistent results.