User Manual

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ratings. T-ratings refer to enabling inductive
coupling with hearing aids operating in
telecoil mode.
Hearing devices may also be rated. Your
hearing aid manufacturer or hearing health
professional may help you find this rating.
Higher ratings mean that the hearing device
is relatively immune to interference noise.
Under the current industry standard,
American National Standards Institute (ANSI)
C63.19, the hearing aid and wireless mobile
device rating values are added together to
indicate how usable they are together. For
example, if a hearing aid meets the M2 level
rating and the wireless mobile device meets
the M3 level rating, the sum of the two
values equals M5.
Under the standard, this should provide the
hearing aid user with normal use while using
the hearing aid with the particular wireless
mobile device. A sum of 6 or more would
indicate excellent performance.