NEC 110 - Manual (Page 12)

Those standards 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.
T
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. The tests are performed in positions and locations (e.g., at
the ear and worn on the body) as required by the FCC for each model.
While there may be differences between the SAR levels of various
phones and at various positions, they all meet the government
requirement for safe exposure. The FCC has granted an Equipment
Authorization for this model phone with all reported SAR levels
evaluated as in compliance with the FCC RF emission guidelines. SAR
information on this model phone is on file with the FCC and can be
found under the Display Grant section of http://www.fcc.gov/oet/fccid
after searching on FCC ID IYGRNP2400. Additional information on
Specific Absorption Rates (SAR) can be found on the Cellular
Telecommunications Industry Association (CTIA) web-site at http://
www.wow-com.com.
NOTE
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.