Huawei STK-L21 Guide De Démarrage Rapide page 10

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Do not use, store or transport the device where
flammables or explosives are stored (e.g. in a petrol
station, oil depot or chemical plant). Using your device in
these environments increases the risk of explosion or
fire.
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Dispose of this device, the battery and accessories
according to local regulations. They should not be
disposed of in normal household waste. Improper battery
use may lead to fire, explosion or other hazards.
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Please consult your doctor and the device manufacturer
to determine if operation of your device may interfere
with the operation of your medical device.
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Adhere to any rules or regulations set forth by hospitals
and health care facilities.
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This device contains a built-in battery. Do not attempt to
replace the battery by yourself. Otherwise, the device
may not run properly or it may damage the battery. For
your personal safety and to ensure that your device runs
properly, you are strongly advised to contact a Huawei
authorised service centre for a replacement.
Potentially Explosive Atmosphere
Power off your device in any area with a potentially
explosive atmosphere, and comply with all signs and
instructions. Areas that may have potentially explosive
atmospheres include the areas where you would normally
be advised to turn off your vehicle engine. Triggering of
sparks in such areas could cause an explosion or a fire,
resulting in bodily injuries or even deaths. Do not power on
your device at refueling points such as service stations.
Comply with restrictions on the use of radio equipment in
fuel depots, storage, and distribution areas, and chemical
plants. In addition, adhere to restrictions in areas where
blasting operations are in progress. Before using the
device, watch out for areas that have potentially explosive
atmospheres that are often, but not always, clearly marked.
Such locations include areas below the deck on boats,
chemical transfer or storage facilities, and areas where the
air contains chemicals or particles such as grain, dust, or
metal powders. Ask the manufacturers of vehicles using
liquefied petroleum gas (such as propane or butane)
whether this device can be safely used in their vicinity.
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