Comark N9002 - Manual (Page 11)

10
9.0 CHANGING THE BATTERIES
The symbol BAT flashes on the display as soon as the battery
voltage drops to an initial warning level. During this first level
of low battery the instrument can be operated normally, but it is
recommended that the battery be replaced as soon as possible.
If the battery is allowed to discharge further there is a second
level of low battery, which is indicated by the symbol remaining
on and not flashing. Replace the battery straight away after
seeing this symbol.
To replace the battery: Make sure the instrument is off,
unscrew the screw retaining the battery cover on the rear of
the instrument using the correct size flat-blade screwdriver.
Remove the two cells and replace with new alkaline cells to
ensure long life. Be careful to observe the correct polarity. Take
care not to over-tighten the screw when re-fitting the cover, and
not to lose the rubber-sealing washer.
Note: The N9002 thermometer will continue to keep correct
date & time for at least 30 seconds after removal of cells. If this
time is exceeded setup may be necessary.
Note: NiCd or NiMh cells can be used but will result in reduced
operating time. Do not attempt to recharge the cells in the
instrument.