User's Manual

exposure decreases rapidly with increasing distance from the source.
The so-called “cordless phones,” which have a base unit connected to
the telephone wiring in a house, typically operate at far lower power
levels, and thus produce RF exposures well within the FCC’s
compliance limits.
■ Do wireless phones pose a health hazard?
The available scientific evidence does not show that any health
problems are associated with using wireless phones. There is no proof,
however, that wireless phones are absolutely safe. Wireless phones
emit low levels of radiofrequency energy (RF) in the microwave range
while being used. They also emit very low levels of RF when in the
stand-by mode. Whereas high levels of RF can produce health effects
(by heating tissue), exposure to low level RF that does not produce
heating effects causes no known adverse health effects. Many studies
of low level RF exposures have not found any biological effects. Some
studies have suggested that some biological effects may occur, but
such findings have not been confirmed by additional research. In some
cases, other researchers have had difficulty in reproducing those
studies, or in determining the reasons for inconsistent results.
■ What is FDA’s role concerning the safety of wireless
phones?
Under the law, FDA does not review the safety of radiation-emitting
consumer products such as wireless phones before they can be sold,
as it does with new drugs or medical devices. However, the agency has
authority to take action if wireless phones are shown to emit
radiofrequency energy (RF) at a level that is hazardous to the user. In
such a case, FDA could require the manufacturers of wireless phones
to notify users of the health hazard and to repair, replace or recall the
phones so that the hazard no longer exists.