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These limits are part of comprehensive guidelines and establish permitted
levels of RF energy for the general population. The 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.
Before a phone model is available for sale to the public, it must be tested and
certified to the FCC that it does not exceed the limit established by the
government-adopted requirement for safe exposure.