Magellan RoadMate 800 Reference Manual page 79

Chapter 14: Navigation Options
The First Warning is set to alert you when you are within a certain number of feet of the POI.
First Warning
Select .
Use the numeric keypad to enter the number of feet at which to alert you. When you have
OK
finished, select .
The Last Warning is set as a final alert when you are within a certain number of feet of the POI.
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