AT&T Z431 - Manual (Page 37)

Radio Frequency (RF) Energy
This model phone meets the government’s requirements for exposure to
radio waves.
This phone is designed and manufactured not to exceed the emission limits for
exposure to radio frequency (RF) energy set by the Federal Communications
Commission of the U.S. Government:
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 accepted 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.
The highest SAR value for the model phone as reported to the FCC when tested
for use at the ear is 1.04 W/kg, and when worn on the body, as described in this
user guide, is 1.37 W/kg (body-worn measurements differ among phone models,
depending upon available enhancements and FCC requirements).
While there may be differences between the SAR levels of various phones and at
various positions, they all meet the government requirement.
66 Radio Frequency (RF) Energy
The FCC has granted an Equipment Authorization for this model phone with
all reported SAR levels evaluated as in compliance with the FCC RF exposure
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/ea/fccid/
after searching on FCC ID: Q78-Z431.
For body-worn operation, this phone has been tested and meets the FCC
RF exposure guidelines for use with an accessory that contains no metal and
positions the handset a minimum of 0.6 inches (1.5 cm) from the body. Use
of other enhancements may not ensure compliance with FCC RF exposure
guidelines. If you do not use a body-worn accessory and are not holding the phone
at the ear, position the handset a minimum of 0.6 inches (1.5 cm) from your body
when the phone is switched on.
67 Radio Frequency (RF) Energy
* 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 to the public and to account for
any variations in measurements.