Operating Environment - Huawei HG658c Quick Start Manual

Areas with flammables and explosives
 Do not use the device where flammables or explosives are stored (in a gas station, oil depot,
or chemical plant, for example). Using your device in these environments increases the risk
of explosion or fire. In addition, follow the instructions indicated in text or symbols.
 Do not store or transport the device in containers with flammable liquids, gases, or
explosives.

Operating environment

 Avoid dusty, damp, or dirty environments. Avoid magnetic fields. Using the device in
these environments may result in circuit malfunctions.
 Before connecting and disconnecting cables, stop using the device and disconnect it from
the power supply. Ensure that your hands are dry during operation.
 Place the device on a stable surface.
 Keep the device away from electronic appliances that generate strong magnetic or electric
fields, such as a microwave oven or refrigerator.
 During thunderstorms, power off your device and remove all cables connected to it to
protect against lightning strikes.
 Do not use your device during thunderstorms to protect your device against any danger
caused by lightning.
 Ideal operating temperatures are 0°C to 40°C. Ideal storage temperatures are -40°C to 70°C.
Extreme heat or cold may damage your device or accessories.
 Keep the device and accessories in a well-ventilated and cool area away from direct
sunlight. Do not enclose or cover your device with towels or other objects. 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.
 Observe local laws and regulations, and respect the privacy and legal rights of others.
 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.
 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 25cm and the distance between the device should be greater than 30cm.
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