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KEYBOARD RK7300 USER’S Manual
3
Warning
Some experts believe that prolonged-usage of keyboard
or mouse may cause serious injury to hands, wrists,
arms, neck or back. If you feel pain, fatigue, numbness
and/or weakness in these areas, please see a qualified
health professional for assistance.
To reduce the risks of such injuries,
we recommend that you:
• Take frequent short-break from operating a computer
or related tasks.
• Avoid operating a computer for extended period of
time, defined by each sitting of an hour or more.
• Please consult with your family physician for the
guideline on proper typing postures.
Do not use this product in ashy, wet or oily environments.
Failure to do so may shorten the life of this product and
may cause injury to its user(s).