Haiyang HFF-650, Manual

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Operation
8. FF Alarm
▶ [MENU] -> 8. FF Alarm
8-1. Depth Alarm:
It alarms when the set depth is out of the range.
( ☞ The default setting is OFF.)
8-2. Depth Alarm Range:
Setup the range of Depth alarm
If it is deeper than the setting, it will alram with the warning message.
If it is lower than the setting, it will alram with the warning message.
( ☞ The default setting is 10m.)
8-3. Temperature Alarm:
Position of the temperature is 4. It will alarm when it is out of the set range.
( ☞ The default setting is OFF.)
8-4.Temperature Alarm Range:
Set up the range of Temperature alarm Range
If it is higher than the setting, it will alram with the warning message.
If it is colder than the setting, it will alram with the warning message.
( ☞ The default setting is 0 decree.)
8-5. Fish-school Alarm:
It alrams when it detects school of fish.
It will detect school of fish depend on set depth, range and level of the fishfinder.
( ☞ The default setting is OFF.)
8-6. Fish-school Depth:
If the alram is on, It is available to setup the depth of the Fish-school
( ☞ The default setting is 10m.)