The overspeed alarm function is to remind you when the bike exceeds the alarm speed value that you set in the setting. You can tap the gear icon on the top left of the APP, and tap the overspeed alarm to modify the value. *Note: The BT series does not have an overspeed alarm yet.

Tap the gear icon on the top left of the APP, and tap the “speed limit” to set the speed limit. Under assist mode, if the speed of the bike is over the “speed limit” value, the motor will stop working. But this function will not work if you use the throttle.

Please tap the lock icon in the right middle of the APP to lock or unlock the kit. If the lock icon is highlighted, then the bike is locked. If you move the bike which is locked, the kit (except the BT series) will alarm.

Please tap “restore factory” in the setting page of the APP

Tap the “firmware upgrade” in the setting page of the APP to update the firmware.