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3. Health and safety information
Exposure to Radio Frequency (RF) Signals
Certification Information (SAR)
Your SWC-U200 dongle is a radio transmitter and receiver. It is designed and
manufactured not to exceed the exposure limits for radio frequency (RF) energy set
by the Federal Communications Commission (FCC) of the U.S. government. These
FCC exposure limits are derived from the recommendations of two expert
organizations, the National Counsel on Radiation Protection and Measurement
(NCRP) and the Institute of Electrical and Electronics Engineers (IEEE). In both
cases, the recommendations were developed by scientific and engineering experts
drawn from industry, government, and academia after extensive reviews of the
scientific literature related to the biological effects of RF energy. The exposure limit
set by the FCC for wireless USB dongles employs a unit of measurement known as
the Specific Absorption Rate (SAR).
The SAR is a measure of the rate of absorption of RF energy by the human body
expressed in units of watts per kilogram (W/ kg). The FCC requires wireless USB
dongles to comply with a safety limit of 1.6 watts per kilogram (1.6 W/kg). The FCC
exposure limit incorporates a substantial margin of safety to give additional
protection to the public and to account for any variations in measurements.
SAR tests are conducted using standard operating positions accepted by the FCC
with the wireless USB dongle transmitting at its highest certified power level in all
tested frequency bands. Although the SAR is determined at the highest certified
power level, the actual SAR level of the wireless USB dongle while operating can be
well below the maximum value. This is because the wireless USB dongle is designed
to operate at multiple power levels so as to use only the power required to reach
the network. In general, the closer you are to a wireless base station antenna, the
lower the power output.
Before a new model wireless USB dongle is available for sale to the public, it must
be tested and certified to the FCC that it does not exceed the exposure limit
established by the FCC. Tests for each model wireless USB dongle are performed in
positions and locations (e.g. worn on the body) as required by the FCC.
The highest SAR values for this model wireless USB dongle as reported to the FCC
are:
