Suunto TRAVERSE ALPHA, Руководство пользователя

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pressure greater than 2 hPa (0.59 inHg) over three hours triggers a
change the direction of the arrow. For example:
pressure dropping heavily over the last six hours
pressure was steady, but rising heavily over the last
three hours
pressure was rising heavily, but dropping heavily
over the last three hours
Storm alarm
A significant drop in barometric pressure typically means a storm is
coming and you should take cover. When the storm alarm is active,
Suunto Traverse Alpha sounds an alarm and flashes a storm symbol
when the pressure drops 4 hPa (0.12 inHg) or more during a 3-hour
period.
The storm alarm is off by default. You can turn it on in the options
menu under
GENERAL » Alerts » Storm alarm .
NOTE: The storm alarm does not work if you have altimeter
profile activated.
When a storm alarm sounds, pressing any button ends the alarm. If
no button is pressed, the alarm repeats once after five minutes. The
storm symbol remains on the display until the weather conditions
stabilize (pressure drop slows down).
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