Casio DT-81D User Manual page 21

Data collector
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1
Use a screwdriver to rotate the screw that
secures the backup battery holder in place
counterclockwise to loosen it.
2
Insert a screwdriver or some flat object into the
back of the backup battery holder and pull out
it.
3
Pull out the backup battery holder.
4
Remove the old backup battery. Wipe off a
new CR2032 lithium battery with a dry cloth,
and load it into the backup battery case so its
plus (+) side is facing towards the holder (so
you can't see it).
5
Load the battery holder into the Data Collector
and tighten the screw.
E-21

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Dt-810

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