TrekStor SURFTAB TWIN 10.1 Operating Instructions Manual page 9

Only use the device indoors under suitable lighting conditions and avoid
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harsh light.
Hold the device at an appropriate distance from yourself.
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Ensure that the display is clean.
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Adjust the screen's brightness and/or contrast settings to a level that is
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comfortable for a crisp, clear display.
Take regular breaks when using the device.
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Risk of impairment to the musculoskeletal system and supporting tissue
from use over longer periods of time
Repetitive movements (e.g., use of keyboard/touch screen or playing
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games for an extended period of time) may result in pain in the hands,
arms, shoulders, neck and shoulder region, and in other parts of the body.
To avoid tiring or straining your musculoskeletal system and supporting
tissue, please note the following:
Always assume a relaxed posture when using the device.
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Change your position regularly and take frequent breaks to move
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around.
Press lightly when typing.
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Take regular breaks.
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If you are experiencing discomfort similar to that indicated above while using the
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device, cease all use of the device immediately and consult a physician.
Do not rest the device on your lap or other parts of your body when in use. The
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device may heat up, resulting in discomfort or injury (e. g., minor burns).
NOTICE
To avoid potential malfunctions and/or damage to the device caused by
environmental factors, please note the following:
The recommended humidity for operating, charging, and storing the device
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is between 30 and 70 percent.
The recommended ambient temperature for operating, charging, and
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storing the device is between 5° C and 30° C. Temperatures above or
below this may adversely affect the charging capacity and service life of
the device and battery and cause damage to the device.
Protect the device from rapid temperature luctuations. Condensation
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from humidity can damage the device and may result in danger to the
user.
Shield the device from direct sunlight (e. g., in the car) and do not store it near
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a heat source to prevent the display and device from malfunctioning and avoid
the risk of the battery exploding.
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