Huawei G2157 User Manual page 22

Do not dismantle the device or accessories. Otherwise,

manufacturer is not liable to pay for damages as the device
and accessories are not covered by warranty.
Emergency Call
You can use your device for emergency calls in the service area.
The connection, however, cannot be guaranteed in all
conditions. You should not rely solely on the device for essential
communications.
Certification Information (SAR)
THIS DEVICE MEETS THE GOVERNMENT'S REQUIREMENTS
FOR EXPOSURE TO RADIO FREQUENCY ELECTROMAGNETIC
FIELD.
Your device is a low-power radio transmitter and receiver. When
it is turned on, it emits low levels of radio frequency energy
(also known as radio waves or radio frequency fields).
Governments around the world have adopted comprehensive
international safety guidelines, developed by scientific
organizations, e.g. International Commission on Non-Ionizing
Radiation Protection (ICNIRP) and Institute of Electrical and
Electronics Engineers Inc. (IEEE), through periodic and
thorough evaluation of scientific studies. These guidelines
establish permitted levels of radio wave exposure for the
general population. The levels include a safety margin designed
to assure the safety of all persons, regardless of age and health,
and to account for any variations in measurements.
Specific Absorption Rate (SAR) is the unit of measurement for
the amount of radio frequency energy absorbed by the body
when using a device. The SAR value is determined at the
highest certified power level in laboratory conditions, but the
actual SAR level of the device while being operated can be well
19