Huawei B311-520 Quick Start Manual page 12

Do not allow children or pets to bite or suck the device or accessories. Doing so may result in damage or
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explosion.
Observe local laws and regulations, and respect the privacy and legal rights of others.
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The device should be installed and operated with a minimum distance of 20 cm between the radiator and
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your body.
Keep the device in a place with good reception. The distance between the device and other metal materials
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(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
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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
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adult supervision.
Accessories
Using an unapproved or incompatible power adapter, charger or battery may cause fire, explosion or other
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hazards.
Choose only accessories approved for use with this model by the device manufacturer. The use of any other
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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.
Power adapter safety
The power plug is intended to serve as a disconnect device.
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For pluggable devices, the socket-outlet shall be installed near the devices and shall be easily accessible.
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Unplug the power adapter from electrical outlets and the device when not in use.
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Do not drop or cause an impact to the power adapter. If it is damaged, take it to an authorized service
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center for inspection.
If the power cable is damaged (for example, the cord is exposed or broken), or the plug loosens, stop using
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it at once. Continued use may lead to electric shocks, short circuits, or fire.
Do not touch the power cord with wet hands or pull the power cord to disconnect the power adapter.
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Do not touch the device or the power adapter with wet hands. Doing so may lead to short circuits,
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malfunctions, or electric shocks.
If your power adapter has been exposed to water, other liquids, or excessive moisture, take it to an
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authorized service center for inspection.
Ensure that the power adapter meets the requirements of Clause 2.5 in IEC60950-1/EN60950-1/UL60950-1
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and has been tested and approved according to national or local standards.
Cleaning and maintenance
During storage, transportation, and operation of the device, keep it dry and protect it from collision.
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Keep the device and accessories dry. Do not attempt to dry it with an external heat source, such as a
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microwave oven or hair dryer.
Do not expose your device or accessories to extreme heat or cold. These environments may interfere with
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proper function and may lead to fire or explosion.
Avoid collision, which may lead to device malfunctions, overheating, fire, or explosion.
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If the device is not going to be used for an extended period of time, power it off, and remove all cables
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connected to it.
If anything unusual occurs (for example, if the device emits smoke or any unusual sound or smell),
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immediately stop using it, power it off, remove all cables connected to it, and contact an authorized service
center.
Do not trample, pull, or excessively bend any cable. Doing so may damage the cable, causing the device to
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malfunction.
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