Operating Environment - Huawei RIO-L02 Quick Start Manual

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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

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Avoid dusty, damp, or dirty environments. Avoid magnetic fields.
Using the device in these environments may result in circuit
malfunctions.
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Do not use your device during thunderstorms to protect your
device against any danger caused by lightning.
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Ideal operating temperatures are 0 °C to 35 °C. Ideal storage
temperatures are -20 °C to 45 °C. Extreme heat or cold may
damage your device or accessories.
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Do not expose your device to direct sunlight (such as on a car
dashboard) for prolonged periods.
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To protect your device or accessories from fire or electrical shock
hazards, avoid rain and moisture.
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Keep the device away from sources of heat and fire, such as a
heater, microwave oven, stove, water heater, radiator, or candle.
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Do not place sharp metal objects, such as pins, near the earpiece
or speaker. The earpiece may attract these objects and result in
injury.
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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.