This clock is designed for operation from a 12 volt DC source only (10.6 to 16v)
Current draw is approximately 50mA (.05 Amps)
Allowable ambient temperature range -20 to + 50° C
The clock has a battery for time memory. To replace, remove the 4 screws on the rear and carefully separate the case
halves. The battery will be seen in the rear half. Slide the battery from its holder (it can only be removed from one
side of the holder), and replace with a CR1220 Lithium Cell.
Observe Polarity when fitting: + side must be up
Two power cables are supplied. Only one can be used at any time.
One end of either supplied lead plugs into the bottom socket marked DC on the rear of the clock.
One lead is designed for cigar socket use, the other for those installations where it is desired to permanently wire the
clock into the 12v electrical system of a vehicle, vessel etc.
Observe the correct polarity if using the permanent wired lead: WHITE is to Po
The wire is of light gauge. Ensure it is properly connected, well supported and provided with proper strain relief.
The cigar plug requires the vehicle socket to have Po at the tip connection. All negative chassis vehicles are
wired this way, but a vessel may not be. If in doubt check with a voltmeter. Warranty is void if incorrectly wired.
As usual best practise, please ensure all + wiring is fused as near as possible to the voltage source and run in a
workmanlike manner. All connections must be secure, low resistance and protected. Use a fuse rating of 1/2 an Amp
The temperature lead/sensor plugs into the top socket on the rear, marked with a thermometer symbol. It is not
necessary for the correct operation of the clock: if it is absent the temperature display will show a line of dashes.
The mounting pedestal swivels vertically, whilst the foot can rotate, or be removed. The foot has sticky tape already
attached, but for a more robust mounting it may be advantageous to drill 2 holes through the foot for screw fittings.
756-2 DIGITAL CLOCK INSTALLATION NOTES
OPERATION
When carrying out setting procedures the clock will exit from the setting mode if no button is pressed for 10 seconds
Setting the time format to 12 or 24 Hour.
From the normal time display, press
UP
once. Further presses will toggle the display 12 or 24 Hour alternately
REMEMBER: 24 hour mode will show as a different display only if the time is after 1pm (1300 hrs)
When in 12 Hour display mode a PM indicator is illuminated for all periods after 12.00 Noon
In all modes the centre colons flash at 1 second intervals
Setting the Time:
Press
SET
four times. The hours display will flash.
Press
UP
or
DOWN
to adjust to the desired setting. The hours will auto increase if either of the buttons is held down
Press
SET
once
The Minutes display will flash.
Press
UP
or
DOWN
to adjust to the desired setting. The min. will auto increase if either of the buttons is held down
Press
SET
once. The time is now set.
Twin Alarms
The clock contains two completely separate alarm functions, which can have their activation times set independently
Individually they could be used to alert to two required waking periods or events throughout a 24 hour day.
Together they could be used to alert to the start of a time period or procedure, and then to signify the finish of that
time period or procedure
Setting the Alarms
Press
ALARM
once, the display will read AL01
If it is desired to set Alarm 2 rather than Alarm 1, press
UP
once. This will toggle between Alarms 1 and 2
Press
SET
once. The hours display will flash
Press
UP
or
DOWN
to adjust to the desired setting. The hours will auto increase if either of the buttons is held down
Press
SET
once. The minutes display will flash.
Press
UP
or
DOWN
to adjust to the desired setting. The min. will auto increase if either of the buttons is held down
Press
SET
once. The display will show either ALon (Alarm on) or AL---- (Alarm off)
Press
UP
once if necessary to toggle the display to read ALon (each press will alternate alarm between On and Off)
Press
SET
. The alarm is now on, and AL1 or AL2 will be displayed on the right hand side of the display
