Huawei B683-74V User Manual

Safety Information

This section contains important information pertaining to the operating
instructions of your device. It also contains information about how to use
the device safely. Read this information carefully before using your
device.

Electronic Device

Do not use your device if using your device is prohibited. Do not use the
device when using your device causes danger or interference with
electronic devices.

Medical Device

 Follow rules and regulations set forth by hospitals and health care

facilities. Do not use your device when using the device is prohibited.

 Some wireless devices may affect the performance of hearing aids or

pacemakers. For any such problems, consult your service provider.

 If you are using an electronic medical device, consult the doctor or the

device manufacturer to confirm whether radio waves affect the
operation of this device.

Potentially Explosive Atmosphere

Do not use 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 use 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.

Traffic Security

 Observe local laws and regulations while using the device. To prevent

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accidents, do not use your wireless device while driving.

 RF signals may affect electronic systems of motor vehicles. For more

information, consult the vehicle manufacturer.

 In a motor vehicle, do not place the device over the air bag or in the air

bag deployment area. Otherwise, the device may hurt you owing to the
strong force when the air bag inflates.

 Do not use your device while flying in an aircraft and before boarding

an aircraft. Using wireless devices in an aircraft may cause danger to
the operation of the aircraft and disrupt the wireless telephone network.
It may also be considered illegal.

Operating Environment

 Do not use or charge the device in dusty, damp, and dirty places or

places with magnetic fields. Otherwise, it may result in a malfunction of
the circuit.

 While using the device, observe the local laws and regulations, and

respect others' privacy and legal rights.

 Place the device or accessories in well-ventilated, cool, and

out-of-direct-sunlight place. Avoid enveloping the device, or covering
towels and placing articles on the device. Place the device out of a box
or case to avoid poor heat dissipation that results in the damage to the
device.

 On a stormy day with thunder, do not use your device, to prevent any

danger caused by lightning.

 Keep the ambient temperature between –10°C to +45°C for using the

device.

 This device should be installed and operated with a minimum distance

of 20 cm between the antenna and all persons.

Safety of Children

Comply with all precautions with regard to children's safety. Letting the
child play with your device or its accessories, which may include parts
that can be detached from the device, may be dangerous, as it may
present a choking hazard. Ensure that small children are kept away from
the device and accessories.

Accessories

Use the accessories delivered only by the manufacturer. Using
accessories of other manufacturers or vendors with this device model
may invalidate any approval or warranty applicable to the device, result in
the non-operation of the device, and cause danger.

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