4. Function overview and Functional areas
4.1 Functional overview
The YL91F-E display offers a variety of features to suit your riding needs, including:
● Battery level indicator
● Pedal assist (PAS) level indicator
● Speed (current speed, maximum speed, average speed)
● Mileage display (single and total mileage)
● Walk boost mode
● Light ON/OFF
● Error code indicator
● Cruise control indicator (optional)
● Personalized parameter settings (e.g. wheel diameter, speed limit, etc.).
● Factory default parameter recovery function
4.2 Functional areas
Figure 4-1 YL91F-E functional area distribution interface
4.3 Button definitions
The YL91F-E display is equipped with five buttons on the corresponding operating unit: power on/off , plus ,
minus , light and toggle .
5. Routine operation
5.1 Power on/off
Long press to power on/off the display. When the display is off, it will not use the battery power and the leakage
current is less than 1uA.
The display will automatically shut off if it is not used for more than 10 minutes.