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Volume booster
This feature allows you to drastically increase the
volume of the other party’s voice. This feature can be
set for each unit.
WARNING
•
This feature is designed for users who are hard of
hearing. If other users use the phone, be sure to
turn this feature off.
•
Do not use this feature unnecessarily. High volume
emitted from the product may cause hearing
damage.
•
Pressing the [BOOST] key activates the volume
booster feature. Use this key with care. At its
loudest setting (volume and volume booster features
set to their highest settings), the product can output
sound at up to 40 dB (KX-TGM420) or 50 dB
(KX-TGM450). To prevent hearing damage, we
recommend that you set this product to the lowest
volume setting at which you can hear adequately.