Many modern computer printers now come with wireless
capability. Some thankfully still also have USB wired connections, but not all
do.
Wireless capability may be controlled by, and indicated on, the
front panel. What is generally not appreciated is that some, when their wired
connection is lost, automatically poll for a wireless connection. It is unlikely
that this fact will be apparent from any sales material or published
specification.
Wireless polling may happen when the computer to which the
printer is connected goes to sleep or when an all-in-one printer is used as a
standalone copier. The device’s polling for a wireless connection may not be accompanied by any indication that it is happening.
Thus anyone the least bit concerned about their EMR exposure
is well-advised to check with an RF Meter, such as the excellent EMFields
Acousticom2, to ensure they are not inadvertently being exposed to needless
wireless radiation.
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