Digitron FM25 Operating Instructions - Page 2

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BATTERIES

It is recommended that AA lithium batteries are used for the low

temperature operation of sensors (freezers etc).

INSTALLING BATTERIES

For the two remote sensor units, remove the battery compartment

cover by sliding it downwards. Insert 2 "AA" alkaline/lithium

batteries. Lithium batteries function at lower temperatures better

than alkaline batteries.

PLACEMENT

The remote units should be fixed onto the refrigerator/freezer at this

stage. Each remote unit is equipped with a spring-action clip for

securing inside the refrigerator or freezer. The clip is designed with

rubber grips to securely hold the remote unit to the edge of glass or

wire shelf commonly found in modern refrigerators.

Alternatively, the included detachable suction cup may be used to

secure the remote sensor to the interior surface Ref #1. A remote

unit kept in a freezing temperature should be secured using the

integrated spring-clip Ref #2.

The main unit may be mounted directly to the refrigerator surface

utilizing the magnetic back of the unit. The main unit may also be

placed on a table or other flat surface using the integrated fold-out

stand on the back of the unit.

THE MAIN DISPLAY

Each sensor's temperature is represented on the main display in

three ways. The largest numbers displayed represent the current

temperature of each remote sensor. The two smaller numbers to

the right in each sensor's display window represent the minimum

and maximum-recorded temperatures. The recorded MIN/MAX

numbers can be cleared by pushing the "CLR" button. You may also

choose between Fahrenheit or Celsius temperature display mode

using the "C/F Select" switch on the back of the main unit.

TEMPERATURE ALARMS

The main unit is equipped with an audible temperature alarm for

each unit. Press the alarm button for the corresponding remote

sensor to turn the alarm function on or off. The ALARM icon on the

main display will appear if the alarm function is on. If the alarm icon

is not displayed, the alarm WILL NOT SOUND.

If the temperatures for each sensor fall below the minimum preset or

rise above the maximum preset for more than 15 minutes, the alarm

will sound. This is to prevent " False alarms" from sounding because

the door was opened to load or unload items from a refrigerator or

freezer. The sensors are supplied with the following defrost preset

alarm temperatures:

Sensor #1 (Refrigerator): minimum is 0ºC/33F, maximum is 4ºC/

40F.

Sensor #2 (Freezer): minimum is -30ºC/22F, maximum is -18ºC/0F.

You may customise the alarm to sound at your desired temperatures

for each unit. See page 5 for instructions on programming the alarm

preset.