Safety
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* In the United States and Canada, the SAR limit for mobile phones used by
the public is 1.6 watts/kg (W/kg) averaged over one gram of tissue. The
standard incorporates a substantial margin of safety to give additional
protection for the public and to account for any variations in
measurements.
FCC Hearing-Aid Compatibility (HAC) Regulations
for Wireless Devices
On July 10, 2003, the U.S. Federal Communications Commission (FCC)
Report and Order in WT Docket 01-309 modified the exception of wireless
devices under the Hearing Aid Compatibility Act of 1988 (HAC Act) to
require digital wireless devices be compatible with hearing-aids. The intent
of the HAC Act is to ensure reasonable access to telecommunications
services for persons with hearing disabilities.
While some wireless devices are used near some hearing devices (hearing
aids and cochlear implants), users may detect a buzzing, humming, or
whining noise. Some hearing devices are more immune than others to this
interference noise, and devices also vary in the amount of interference they
generate.
The wireless telephone industry has developed a rating system for wireless
devices, to assist hearing device users to find devices that may be
compatible with their hearing devices. Not all devices have been rated.
Devices that are rated have the rating on their box or a label located on the
box.
The ratings are not guaranteed. Results will vary depending on the user’s
hearing device and hearing loss. If your hearing device happens to be
vulnerable to interference, you may not be able to use a rated device
successfully. Trying out the device with your hearing device is the best way
to evaluate it for your personal needs.
M-Ratings: Devices rated M3 or M4 meet FCC requirements and are likely
to generate less interference to hearing devices than devices that are not
labeled. M4 is the better/higher of the two ratings.
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