- Suitable for: Ouxi H9 with black motor cable
- Version: 21A, 250/500W, black motor plug, 5 connection cables including alarm
- Speed: limited to 25 km/h, walk assist 6 km/h, no tuning function
The limited H9 controller for the version with black motor plug and 21A. It replaces a faulty unit and keeps the H9 at the legal 25 km/h; the throttle works as walk assist up to 6 km/h.
If you are after more speed, there is a tunable 21A variant for this black-plug H9. If your motor cable has a red plug, you need the red 6A version; the two are not compatible. Fitting: remove the saddle, transfer five plugs, put the saddle back.






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