Highgear TechTrail 3 - Manual (Page 7)

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How to Calibrate Compass:
* Press S1 to enter compass mode, then press and hold S4,
“CAL” will be displayed.
* Holding the unit on a flat surface, rotate the unit three times,
360 °, each time at least 15 sec per turn, then press S4.
* Set the flashing digits in 00 degree to the declination in your
area (S2 is for adjusting and S3 is for selecting), after the
setting is complete, press S4 to fix.
* To exit to another mode press S3.
Time Mode
Normal time mode displays hour, minute, second, month, date and
day of the week. You can toggle between 12hr and 24hr time
display. Also, you can select two time zones, “T1” and “T2”.
* Press S3 to show “TM”.
* Press S2 for 3 seconds to switch from “T1” to “T2”.
* Press S4 for 3 seconds to make adjustment; the digits start to
flash, then press S3 to select the position. When digits are
flashing, press S2 to adjust the seconds, minutes, hours, date,
month, day of the week and year, and to toggle between 12hr
or 24hr time display. After the setting is complete, press S4 to
fix it.
Temperature Mode
You can toggle between °F or °C display. Also you can offset the
displayed temperature ± 5 degrees from the detected
temperature. For example, if TrailDrop shows 25 ° C (detected
temperature) and another thermometer shows 23 ° C, then you
can set TrailDrop to show 23 ° C (displayed temperature); and from
then onwards, displayed temperature is offset by - 2 ° C from the
detected temperature.
* Press S2 for 3 seconds to toggle between °F or °C display.
How to Offset Temperature:
Press S4 for 3 seconds to start the offsetting process, the digits