Failure to follow these recommendations may severely
reduce the amount of hearing protection provided by
the earplugs.
• Earplugs comply with EN-352 standard of measurement.
• At very high SPLs (above 125 dB SPL, where the limit to
attenuation is the eartip itself), the foam eartips provide
the most protection.
• Eartips fit ear canal diameters of 6-13 mm. See Eartip
section for details.
• The following applies when the device is turned off
or the battery is drained:
The level of noise entering a person’s ear, when
a hearing protector is worn as directed, is closely
approximated by the difference between the
A-weighted environmental noise level and the NRR.
Example
1. The environmental noise level as measured at the ear
is 92 dBA.
2. The NRR is 25 decibels (dB).
3. The level of noise entering the ear is approximately
equal to 67 dBA.
Caution: For noise environments dominated by
frequencies below 500 Hz the C-weighted environmental noise level should be used. Although hearing
protectors can be recommended for protection against
the harmful effects of impulsive noise, the Noise
Reduction Rating (NRR) is based on the attenuation of
of the protection attainable against
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.
Greatest sound reduction is achieved
with deeply-sealed foam eartips
SM
Beige
Foam
6-9 mm
LRG
Black
Foam
8-13 mm
Glider
8-11mm
Selecting an eartip:
No two ears are exactly alike. The eartip that is most
comfortable is the best choice, but it must seal well
to prevent feedback (whistling) and provide proper
protection.
When changing eartips make sure the eartip
fits securely on the stem of the device.
down or compress the foam
eartip before inserting. Hold
the eartip in place for about
5 seconds while foam expands
to create a tight seal in the
ear canal.
• When using glider eartips
no compression is needed;
simply push into the ear.
Earplugs turn on and off by opening and closing the
battery door. Note: It is not necessary to remove the
battery as long as the door is open wide enough to
disable the circuit.
Battery Door
ON = Closed
OFF = Open
Flip toward front
= LO position
Flip toward back
= HI position
Dual-Mode Switch
Automatic Protection + Blast Protection Mode (LO)
• No interference with natural hearing; soft and loud sounds
are heard naturally
• Automatically delivers 15-dB protection when
steady-state noise exceeds safe exposure limits
• Blast protection
Enhancement + Blast Protection Mode (HI)
• Amplifies soft and conversational sounds for improved
communication and increased awareness of surroundings
• No amplification of loud sounds
• Automatic 15-dB hearing protection is not present in HI mode
Use commonly-available #10 zinc-air hearing
aid batteries. They are easy to find in pharmacies,
online, and at various retail locations.
• Zinc-air batteries have a long shelf life, but once
the tab is removed, battery life is about 9 days for
continuous operation.
• Battery life is about 2 weeks if the devices are
turned off after each use.
•
Once the tab is removed, zinc-air batteries may selfdischarge in about 4 weeks whether used or not.
• The discharge rate varies with temperature
and humidity.
• It is sometimes possible to prolong the life of
a battery by replacing the tab over the air holes,
but results vary.
Low Battery Warning
LOBAT™: A ticking sound becomes faster and louder,
like the sound of a motorboat when the battery is
about to die. After the warning sound first becomes
audible, it may be a few hours before the battery
dies. Performance and protection do not change
while LOBAT is sounding.
Each device has a special filter that enhances sound
quality and prevents earwax from entering the
device. A filter should be changed if the volume
decreases or sound quality declines.
Filter Removal
Note: Use the tool to remove the filter.
1. Remove eartip.2. Insert tool into
Filter Replacement
Note: Do not use the tool to replace the filter.
the filter.
3. Remove filter.
2. Press gently
against a hard
surface to secure
it in place.
Etymotic will repair or replace defective product
at its option if returned within one year of purchase
to our designated service facility. This warranty is
in lieu of all other warranties, expressed or implied,
including, but not limited to, any implied warranty
of merchantability or fitness for a particular purpose.
Noise
Reduction
(WHEN USED AS DIRECTED)
Rating
THE RANGE OF NOISE REDUCTION RATINGS
FOR EXISTING HEARING PROTECTORS
IS APPROXIMATELY 0 TO 30
(HIGHER NUMBERS DENOTE GREATER EFFECTIVENESS)
ETYMOTIC RESEARCH, INC.
ELK GROVE VILLAGE, IL 60007
Federal law prohibits
removal of this label
prior to purchase.