Casio C721 User Manual

Safety

k What about wireless phone interference with 

Radiofrequency energy (RF) from wireless phones can interact 

with some electronic devices. For this reason, FDA helped 

develop a detailed test method to measure electromagnetic 

interference (EMI) of implanted cardiac pacemakers and 

defibrillators from wireless telephones.

This test method is now part of a standard sponsored by the 

Association for the Advancement of Medical Instrumentation 

(AAMI). The final draft, a joint effort by FDA, medical device 

manufacturers, and many other groups, was completed in late 

2000. This standard will allow manufacturers to ensure that 

cardiac pacemakers and defibrillators are safe from wireless 

phone EMI.

FDA has tested hearing aids for interference from handheld 

wireless phones and helped develop a voluntary standard 

sponsored by the Institute of Electrical and Electronic Engineers 

(IEEE). This standard specifies test methods and performance 

requirements for hearing aids and wireless phones so that no 

interference occurs when a person uses a “compatible” phone 

and a “compatible” hearing aid at the same time. This standard 

was approved by the IEEE in 2000.

FDA continues to monitor the use of wireless phones for 

possible interactions with other medical devices. Should harmful 

interference be found to occur, FDA will conduct testing to assess 

the interference and work to resolve the problem. 

For more information, please visit the FDA website at 

http://www.fda.gov/cellphones.