User Manuals

Download the right manual for your DUODIAN ride. Please match the model code on your product label (examples: F20, ET-02 Ultra, 12TW) before downloading.

Safety first: Always wear a helmet and protective gear. Children should ride under adult supervision. Ride only in safe areas and follow all local regulations.

Kids Electric Balance Bikes

12TW / 12TG • 16TO / 16TB • LD2048 — User Manual (PDF)

Models covered: 12TW, 12TG, 16TO, 16TB, LD2048

  • Parents/guardians should read the manual carefully and keep it for future reference.
  • Recommended: ride under adult supervision, and avoid public roads.
Download manual

Tip: If your parts list mentions a kickstand, note that the stand may not apply to 12TW/12TG models.

Kids Electric Dirt Bikes (ET Series)

ET-01PRO • ET-01MAX • ET-02ULTRA — User Manual (PDF)

Models covered: ET-01PRO, ET-01MAX, ET-02ULTRA

Download manual

Related products: ET-01  ·  ET-02 Ultra

Adult Electric Scooters

F20 • F20MAX • F20Lite — User Manual (PDF)

Models covered: F20, F20MAX, F20Lite (If your order is F20i, use this manual as the closest match.)

Download manual

Related products: F20  ·  F20Max  ·  F20i

F30Pro • F30Ultra — User Manual (PDF)

Models covered: F30Pro, F30Ultra

Download manual

Related product: F30Pro

X4Pro • X4Pro+ — User Manual (PDF)

Models covered: X4Pro, X4Pro+

Download manual

If your scooter is app-enabled, also follow the Tuya setup guide below.

App & Connectivity (Tuya)

Tuya App Setup Guide (PDF)

For app-enabled scooters using the Tuya app. Minimum requirement: iOS 8.0+ or Android 4.3+.

Download Tuya setup guide
  • If non-zero start is enabled, you must kick to start first, then use the throttle.
  • To toggle start mode quickly: press the power button 4 times (model-dependent).

Need help?

If you’re not sure which manual matches your scooter/bike, please contact support@duodianbike.com and include your order number + model code (from the product label).