Acer TravelMate 4750 - Manual (Page 10)

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Operating environment
Warning! For safety reasons, turn off all wireless or radio
transmitting devices when using your laptop under the following
conditions. These devices may include, but are not limited to:
wireless LAN (WLAN), Bluetooth and/or 3G.
Remember to follow any special regulations in force in any area, and always
switch off your device when its use is prohibited or when it may cause
interference or danger. Use the device only in its normal operating positions.
This device meets RF exposure guidelines when used normally, and it and its
antenna are positioned at least 1.5 centimeters (5/8 inches) away from your
body. It should not contain metal and you should position the device the above-
stated distance from your body. To successfully transmit data files or messages,
this device requires a good quality connection to the network. In some cases,
transmission of data files or messages may be delayed until such a connection is
available. Ensure that the above separation distance instructions are followed
until the transmission is completed. Parts of the device are magnetic. Metallic
materials may be attracted to the device, and persons with hearing aids should
not hold the device to the ear with the hearing aid. Do not place credit cards or
other magnetic storage media near the device, because information stored on
them may be erased.
Medical devices
Operation of any radio transmitting equipment, including wireless phones, may
interfere with the functionality of inadequately protected medical devices.
Consult a physician or the manufacturer of the medical device to determine if
they are adequately shielded from external RF energy or if you have any
questions. Switch off your device in health care facilities when any regulations
posted in these areas instruct you to do so. Hospitals or health care facilities
may be using equipment that could be sensitive to external RF transmissions.
Pacemakers. Pacemaker manufacturers recommend that a minimum separation
of 15.3 centimeters (6 inches) be maintained between wireless devices and a
pacemaker to avoid potential interference with the pacemaker. These
recommendations are consistent with the independent research by and
recommendations of Wireless Technology Research. Persons with pacemakers
should do the following:
• Always keep the device more than 15.3 centimeters (6 inches) from the
pacemaker
• Not carry the device near your pacemaker when the device is switched on. 
If you suspect interference, switch off your device, and move it.
Hearing aids. Some digital wireless devices may interfere with some hearing
aids. If interference occurs, consult your service provider.