Sunstech CA7DUAL Manual De Usuario página 25

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Liquids will change the colour of the label which indicates the damage
caused by the water inside the device. The damage caused by the water in
the device may cancel the manufacturer's warranty.
Place the device only on flat surfaces.
If it drops, the device may get damaged.
Do not store the device in very hot or cold places. It is recommended that you use
the device at temperatures between 5º and 35º.
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Do not store the device in places with very high temperatures, such as
inside a car in the summer. If you do so, you may cause the screen to
malfunction, the device may get damaged or the battery may explode.
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Do not expose the device to direct sunlight for long periods of time (for
example, on the dashboard of a car).
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Store the battery at temperatures between 0º and 45º.
Do not store the device with metal objects, such as coins, keys and necklaces.
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The device may get scratches or stop working properly.
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If the battery terminals come into contact with metal objects, a fire may
occur.
Do not store the device near magnetic fields.
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It is possible for the device to start malfunctioning and for the battery to
lose power due to being exposed to these fields.
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Cards with magnetic stripe, such as credit cards, telephone cards, travel
passes may get damaged due to the magnetic fields.
If the device overheats, stop using it and its applications for a while.
Prolonged skin exposure to a hot device may cause symptoms of burning with low
temperature, such as red spots and pigmentation.
Do not use the device if the back cover is not in place.
The battery may come out of the device, which can cause damage or malfunctioning.
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