Huawei C3100 User Manual page 24

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
mount 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 below the value. This is because the
device is designed to use the minimum power required to reach the
network.
Before a device model is available for sale to the public, it must be
tested and certified by the Federal Communications Commission
(FCC), ensuring that it does not exceed the limit established by the
government-adopted requirement for safe exposure. The tests are
performed in positions and locations (that is, at the ear and worn on
the body) as required by the FCC for each model. For body worn
operation, this device has been tested and meets FCC RF exposure
guidelines when the handset is positioned a minimum of 15 mm from
the body with an accessory that contains no metal part. Use of other
accessories may not ensure compliance with FCC RF exposure
guidelines.
The SAR limit adopted by USA and Canada is 1.6 watts/kilogram
(W/kg) averaged over one gram of tissue. The highest SAR value
reported to the FCC and IC for this device type when tested for use at
the ear is 1.040W/kg, and when properly worn on the body is
0.873W/kg.
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