Humminbird LCR 120 Operation Manual page 26

Bottom Alarm
4. Enabling Bottom Alarm;
Factory Setting: Off
The Bottom Alarm lets you specify the minimum depth you want to maintain. To use it,
select BOTTOM ALARM; then press the ON-OFF button to activate the alarm, and the Up or
Down arrow button to adjust the depth at which the alarm depth when this function is on.
When Bottom Alram is on, you'll hear a continuous chirping sound when bottom is
shallower than you defined. This is very handy for alerting you to shallow water or helping you
maintain position over structure.
Fish Alarm
5. Enabling Fish Alarm;
Factory Setting: Off
The Fish Alarm alerts you with a chirping sound whenever the LCR 120
detects fish (or another object not attached to the bottom). To activate it,
select FISH ALARM and press the ON-OFF button.
Initially, the fish alarm will sound when any target not attached to the bottom is
detected. The word "ALL" is displayed on the menu and two fish are shown on the lower