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guidelines are based on standards that were developed by independent
scientific organizations through periodic and thorough evaluation of scientific
studies. The standards include a substantial safety margin designed to assure
the safety of all persons, regardless of age and health.
The exposure standard for wireless mobile phones employs a unit of
measurement known as the Specific Absorption Rate, or SAR. The SAR limit
set by the FCC is 1.6W/kg.* Tests for SAR are conducted using standard
operating positions specified by the FCC with the phone 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
phone while operating can be well below the maximum value. This is
because the phone 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.
* In the United States and Canada, the SAR limit for mobile phones used by
the public is 1.6 watts/kg (W/kg) averaged over one gram of tissue. The
standard incorporates a substantial margin of safety to give additional
protection for the public and to account for any variations in measurements.