Operating Environment - Huawei B612 Quick Start Manual

 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.
 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 -20°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
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