64
Power hearing aid
· Special care should be exercised in selecting,
fi tting, and using hearing aids where the maximum
sound pressure capability exceeds 132 dB SPL
(IEC 60318-4 / IEC 711) as there may be a risk of
impairing the remaining hearing of the hearing aid
user.
For information on whether your instrument is a
power hearing aid, see the model overview section
in this booklet.
Possible side effects
· Hearing aids, moulds or domes may cause an
accelerated accumulation of earwax.
· The non-allergenic materials used in hearing aids
may, in rare cases cause a skin irritation or other
side effects.
If these conditions occur, seek consultation with
a physician.
Use on aircraft
· Your hearing aids have Bluetooth wireless
technology. On board an aircraft, the hearing
aids must be put into Flight mode to deactivate
Bluetooth, unless Bluetooth is permitted by the
fl ight personnel.
General warnings
65
Connection to external equipment
· The safety of the hearing aid, when connected
to external equipment with an auxiliary input
cable and/or with USB cable and/or directly,
is determined by the external signal source.
When the hearing aid is connected to external
equipment which is plugged into a power socket,
this equipment must comply with IEC 62368-1 or
equivalent safety standards.
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