Humminbird 385ci - Manual (Page 107)

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Temp. Alarm
Settings: Off, 33-120 Fahrenheit, 0-50 Celsius
[International Models only]; Default = Off
Temp. Alarm sounds when the water temperature detected by the Fishfinder
reaches the Temp. Alarm setting, which is either set in degrees Fahrenheit or
Celsius [International Models only].
Off Course Alarm
Settings: Off, 25 to 3000 feet, 10 to 1000 meters
[International Models only]; Default = 300 ft, 100 m
Off Course Alarm allows you to set how far the boat is allowed to move off
course before the Off Course Alarm will sound during navigation.
For example, if the Temp. Alarm is set to 58 degrees Fahrenheit, and the water
temperature falls from 60 degrees to 58 degrees, the Temp. Alarm will sound.
Similarly, if the water temperature rises from 56 degrees to 58 degrees, the Temp.
Alarm will also sound.
Off Course
Limits
Arrival Alarm
Circle
Alarms Menu Tab