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Boost your scooter's performance with the isinwheel controller replacement for S9/S9Pro. Precisely engineered, it guarantees seamless operation, optimal power management, and efficient rides. A genuine component ensures your scooter runs at its best, enhancing both durability and rider experience.. The controller has two versions:. The old version is suitable for old S9/S9pro electric scooters that have two-speed modes of 20 km/h or 25 km/h.. The new version is suitable for new S9pro electric scooters that have three-speed modes of 6 km/h, 15km/h, or 25 km/h.. Current:17 A. Voltage: DC 36V. Remove the controller. Install the controller