DASAN ELECTRON DH-027TFN Benutzerhandbuch - Seite 3

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Do not continue to operate the equipment if you are in any doubt
about it working normally, or if it is damaged in any way
-
Disconnect from your telephone equipment and consult your
dealer.
Do not allow electrical equipment to be exposed to rain or moisture.
Never push anything into holes, slots or any other opening as this
could result in fatal electrical shock.
Never guess or take chances with electrical equipment.
Do not open the headset housings as doing so will void your warranty.
WARNING
Telephone headsets are capable of producing high levels of sound.
Prolonged exposure to high sound levels can cause damage to
hearing.