Radio Shack 1850 Owner's Manual page 12

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Do not drop your product. This
will likely result in failure to
operate. Circuit boards can crack
and cases may not survive the
impact. Handling your product
roughly will shorten its useful life.
Do not use or store in areas of high
levels of dirt or dust. The
electronics may be contaminated.
Any moving parts will wear
prematurely.
Do not use harsh chemicals,
cleaning solvents or strong
detergents to keep your unit
looking new. You need only wipe it
with a dampened cloth from time
to time.
12
Always make sure any batteries
used are fresh and are of the correct
type. Never use general purpose
batteries if alkaline cells are called
for. Old or almost-dead batteries
are also dangerous. A worn out
battery can leak chemicals which
will destroy electronic circuits.

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