Etymotic DI-15® High-Definition Electronic Earplugs for Dentists - Manual (Page 3)

3
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Caution
(continued)
of the protection attainable against impulsive noise
such as gunfire.
• Earplugs must be fitted, adjusted and maintained to
the manufacturer’s instructions to achieve the expected
attenuation and hearing protection.
• Use earplugs at all times in noisy surroundings.
• Make certain that the earplugs provide adequate
protection for the noisy environment.
• Earplugs are reusable. Regularly inspect the earplugs
to assure their continued serviceability.
• Connecting cord should not be used where there
is a risk that the connecting cord can be caught up
during use.
• This product may be adversely affected by certain
chemical substances. Further information should
be sought from the manufacturer.
• This earplug is provided with level-dependent
attenuation. The wearer should check correct
operation before use. If distortion or failure
is detected, the wearer should refer to the
manufacturer’s advice for maintenance and
replacement of the battery.
Warning: The output of the level-dependent
circuit of the hearing protector may exceed the
daily limit sound level.
• To determine if the device is working, insert a battery,
cup the device in your hand and listen for acoustic
feedback (squeal). If feedback is present, the battery
is working.