Casio WSD-F10 User Manual page 138

The available scientific evidence does not show that any health problems
are associated with using low power wireless devices.
There is no proof, however, that these low power wireless devices are
absolutely safe. Low power Wireless devices emit low levels of radio
frequency energy (RF) in the microwave range while being used. Whereas
high levels of RF can produce health effects (by heating tissue), exposure
of 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 might occur, but such findings have not been confirmed
by additional research. The WSD-F10 has been tested and found to
comply with FCC/IC radiation exposure limits set forth for an uncontrolled
environment and meets the FCC radio frequency (RF) Exposure
Guidelines and RSS-102 of the IC radio frequency (RF) Exposure rules.
EN-136