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Depth Alarm. The 405SX contains an audible
alarm to warn you of shallow water depths. The
alarm is adjustable to depths of 2' to 99'. When
the alarm is enabled, an audible alarm sounds if
the water beneath the boat is equal to or less than
the selected alarm depth. The alarm sounds
continuously for about five seconds, and then
intermittently to remind you that you are still in
shallow water.
Additionally, the 405SX can
anticipate quickly changing terrain and sound
the Depth Alarm before the bottom depth
actually reaches the preset alarm depth.
Fish Alarm. The Fish Alarm alerts you to the
presence of fish, or other targets not connected
to the bottom. The Fish Alarm has three different
settings that correspond to the three different
size fish symbols shown on-screen.
The default setting is “OFF.” With the “Large
fish only” setting, the
405SX alarms on only
those targets that are represented by the large
fish symbols. The
405SX can be set to alarm on
only large and medium fish, or set to alarm on
all fish.
Once the Fish Alarm is enabled, the
405SX emits
an audible beep when the selected size fish
symbol appears on-screen.
Fish Alarm settings are remembered when the
unit is powered off.
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USING THE 405SX
MENU FUNCTIONS