Huawei B681-54 Quick Start Manual page 10

Do not place the device in a container with poor heat dissipation, such as a box
or bag.
To protect your device or accessories from fire or electrical shock hazards,

avoid rain and moisture.
Keep the device away from sources of heat and fire, such as a heater,

microwave oven, stove, water heater, radiator, or candle.
Do not place any object, such as a candle or a water container, on the device. If

any foreign object or liquid enters the device, immediately stop using it, power it
off, and remove all cables connected to it. Then, contact an authorized service
center.
Do not block device openings. Reserve a minimum of 10 cm around the device

to dissipate heat.
Stop using your device or applications for a while if the device is overheated. If

skin is exposed to an overheated device for an extended period, low
temperature burn symptoms, such as red spots and darker pigmentation, may
occur.
Do not touch the device's antenna. Otherwise, communication quality may be

reduced.
Do not allow children or pets to bite or suck the device or accessories. Doing so

may result in damage or explosion.
Observe local laws and regulations, and respect the privacy and legal rights of

others.
The device should be installed and operated with a minimum distance of 20 cm

between the radiator and your body.
Keep the device in a place with good reception. The distance between the

device and other metal materials (such as metal brackets or metal doors and
windows) should be greater than 25 cm and the distance between the device
should be greater than 30 cm.
Child's safety
Comply with all precautions with regard to child's safety. Letting children play

with the device or its accessories may be dangerous. The device includes
detachable parts that may present a choking hazard. Keep away from children.
The device and its accessories are not intended for use by children. Children

should only use the device with adult supervision.
Accessories
Using an unapproved or incompatible power adapter, charger or battery may

cause fire, explosion or other hazards.
Choose only accessories approved for use with this model by the device

manufacturer. The use of any other types of accessories may void the warranty,
may violate local regulations and laws, and may be dangerous. Please contact
your retailer for information about the availability of approved accessories in
your area.
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