The NRR for the 60540 Foam Earplugs is 33dB. It is tested and in accordance
with ANSI S3.19-1974. To ensure adequate hearing protection, the earplugs
The NRR for the 60540 Foam Earplugs is 33dB. It is tested and in accordance
with ANSI S3.19-1974. To ensure adequate hearing protection, the earplugs with ANSI S3.19-1974. To ensure adequate hearing protection, the earplugs
The NRR for the 60540 Foam Earplugs is 33dB. It is tested and in accordance
Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the
CHOKING HAZARD – Small parts. Keep earplugs away from small children (risk of
Store in a cool and dry place, away from direct sunlight between
Store in a cool and dry place, away from direct sunlight between
Store in a cool and dry place, away from direct sunlight between
Earplugs must be discarded by the expiration date printed on the
Earplugs must be discarded by the expiration date printed on the
Earplugs must be discarded by the expiration date printed on the
FOAM EARPLUGS –
60540
INSTRUCTIONS
ENGLISH
Klein Tools 60540 Foam Earplugs are designed to fit into the ear canal and
intended to provide limited protection from harmful noise.
WARNINGS
INSTRUCTIONS FOR USE
FIG. 1 FIG. 2
FIG. 3 FIG. 4
FIG. 5 FIG. 6
Read instructions
before using
NOISE REDUCTION RATING (NRR)
ANSI S3.19-1974 TESTING
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
Mean Attenuation (dB) 41.7 41.0 45.4 41.3 38.3 41.1 42.0 48.6 48.1
Standard Deviation 4.5 5.1 4.7 3.3 2.6 3.3 3.3 3.5 3.4
The level of noise entering a person’s ear, when hearing protector is worn as directed, is closely
approximated by the difference between the A-weighted environmental noise level and the NRR.
EXAMPLE:
• The environmental noise level as measured at the ear is 92dB(A).
• The NRR is 33dB.
• The level of noise entering the ear is approximately equal to 59dB(A).
CAUTION: For noise environments dominated by frequencies below 500 Hz,
the C-weighted environmental noise level should be used.
NOTE: 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
continuous noise and may not be an accurate indicator of the protection attainable against
impulsive noise such as gunfire. The Environmental Protection Agency uses the Noise
Reduction Rating (NRR) as a rating of a hearing protector’s noise-reducing performance.
Klein Tools cannot guarantee the suitability of the NRR as a method of rating protection as
protection relies on the level and exposure of sound and how well a product fits the user.
MAINTENANCE
CSA CLASS
33 AL
14°F
(-10°C)
Year/Month
Temperature range of
104°F
(40°C)
storage conditions
Expiration date
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