Only the XOSS heart rate monitor can be set.
Heart Rate Monitor Warning
After the Heart Rate Sensor Armband is connected to the XOSS APP, enter the connection details page-turn on the heart rate alarm-set the alarm value, and the Heart Rate Sensor Armband will emit a warning sound.
Bike Computer Warning
After the Heart Rate Monitor is connected to the XOSS bike computer, you can click the settings-user profile-heart rate alert.
When the heart rate alert is turned on, the device will emit a warning alert sound.