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4.3 Geo-fence button
Activate geo-fence function:
While pressing and holding the geo-fence button for 2 seconds, LT-200 would beep and
start to get GPS fix. It would keep beeping till device gets GPS fix. After getting GPS fix, it
would beep for 1.5 seconds, vibrate, and make itself as the center of the circular
geo-fence area whose radius is 200 meters (default value).
If device moves out the geo-fence area, device would trigger the alarm action of beeping 3
times and then turn silent for 1.5 seconds and repeat the alarm action till device return the
geo-fence area or pressing and holding the geo-fence button for 2 seconds.
Deactivate geo-fence function:
Pressing and holding the geo-fence button for 2 seconds would make device beep twice
and vibrate. Then the geo-fence function is deactivated.
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