Low Battery Alarm; Aux. Temp Alarm (With Optional-Purchase Temp. Probe Or Temp/Speed Only); Temp. Alarm - Humminbird 1158c Combo Installation And Operation Manual

Low Battery Alarm sounds when the input battery voltage is equal to or less than the menu
setting. The battery alarm will only sound for the battery that is connected to the Fishfinder. The
Low Battery Alarm should be set to warn you when the battery voltage drops below the safety
margin that you have determined.
The Fishing System will detect when the connected battery voltage is too low or too high, and
it will display Input Voltage Low or Input Voltage High messages if these limits are exceeded. If
you turn on the Low Battery Alarm using the Alarms Main Menu, the unit will use your settings.
If you do not turn on the Low Battery Alarm, the unit will use the following limits: 7.5 to 7.9 VDC
(low) and 21 to 21.2 VDC (high).
For example, if you are running a trolling motor (battery operated), you would want to set the
Low Battery Alarm to sound before the battery voltage drops too low for it to be used to start
your main, gasoline-powered engine.
Aux Temp Alarm sounds when the water temperature from the Paddlewheel/Temperature Probe
detected by the Fishing System reaches the Aux Temp Alarm setting, which is set in degrees
Fahrenheit or Celsius [International Models only].
For example, if the Aux Temp Alarm is set to 58 degrees Fahrenheit, and the water temperature
falls from 60 degrees to 58 degrees, the Aux Temp Alarm will sound. Similarly, if the water
temperature rises from 56 degrees to 58 degrees, the Temp Alarm will also sound.
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].
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.
Alarms Menu Tab

Low Battery Alarm

Settings: Off, 8.5V - 13.5V; Default = Off
Aux. Temp Alarm
(with optional-purchase Temp. probe or Temp/Speed only)
Settings: Off, 33-120 [Fahrenheit], 0-50 [Celsius], Default = Off

Temp. Alarm

Settings: Off, 33-120 Fahrenheit, 0-50 Celsius [International Models
only]; Default = Off
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