Magellan RoadMate 860T Reference Manual page 67

Chapter 8: Navigation Options
Use the numeric keypad to enter the number of degrees in which to set the alert. When you
OK
have finished, select .
The First Warning is set to alert you when you are within a certain number of feet from the POI.
First Warning
Select .
Use the numeric keypad to enter the number of feet in which to alert you. When you have
finished, select OK .
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