Huawei E5785-320 Quick Start Manual page 10

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.
Traffic security
• Observe local laws and regulations while using the device. To
reduce the risk of accidents, do not use your wireless device while
driving.
• Concentrate on driving. Your first responsibility is to drive safely.
• RF signals may affect the electronic systems of motor vehicles. For
more information, consult the vehicle manufacturer.
• Do not place the device over the air bag or in the air bag
deployment area in a motor vehicle. Doing so may hurt you because
of the strong force when the air bag inflates.
• Wireless devices may interfere with the airplane's flight system. Do
not use your device where wireless devices are not allowed
according to the airplane company's regulations.
Operating environment
• Avoid dusty, damp, or dirty environments. Avoid magnetic fields.
Using the device in these environments may result in circuit
malfunctions.
• Do not use your device during thunderstorms to protect your device
against any danger caused by lightning.
• Ideal operating temperatures are 0 °C to 35 °C. Ideal storage
temperatures are -20 °C to +60 °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.
• Do not expose your device to direct sunlight (such as on a car
dashboard) for prolonged periods.
• 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.
• 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.
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