Please try the timer app that allows you to select the notification method.Alarm: Notify with alarm soundLight: Light turns on to notifyVibration: The terminal vibrates and notifiesUsage is simple.1. Set the timer value2. Set the notification methodSettings can be changed with the alarm / light / vibration icon buttonsFor alarms, the volume can be set from 0 to 15 levels.3. Press the start button to start the countdown4. When the time is up, you will be notified by the set notification method.