Mitsubishi Endeavor Owner's Manual page 215

Features and controls
2. The monitor will show "The setting is progressing" while
the setting change is in progress.
When the setting change has been completed successfully,
a tone will sound once and the monitor will return to the
"Rheostat synchronization" display.
If the setting change is not successful, the monitor will
show "The setting failed." then return to the "Rheostat
synchronization" display.
Timer buzzer setting
It is possible to turn on or off the function that causes the tone
to sound when the countdown timer reaches 0:00:00.
3
1. Press the " " function button, align the cursor with the
desired setting, and press the "SELECT" function button.
• ON: The tone sounds.
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• OFF: The tone does not sound.
NOTE
The initial (default) setting is "ON".
2. The monitor will show "The setting is progressing" while
the setting change is in progress.
When the setting change has been completed successfully,
a tone will sound once and the monitor will return to the
"Timer buzzer setting" display.
If the setting change is not successful, the monitor will
show "The setting failed." then return to the "Timer
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buzzer setting" display.