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Material of headband:
Material of cushion:
MODEL (OVER-THE-HEAD) ATTENUATION CHARACTERISTICS
Important NRR Information
To the user, the EPA requires the Lidl US to provide the following information:
Model: NRR User Information (EPA Noise Reduction Rating)
Subject
125
Mean
13 .8
Std. Dev.
1 .7
Overall device NRR when property fitted is: = 23dB
Improper fit of this device will reduce its effectineness in attenuating noise (see
fitting instructions) .
Level Dependence:
Sound Attenuation Data for Hearing Protectors in the USA . (ANSIS3 .19-1974)
Tested and approved in accordance with ANSI S3 19: 1974 at Michaels & Associates, Inc . (in
passive mode with electronics off) .
The NRR calculated from these laboratory-based attenuation data is 23dB . Improper fit of this
device will reduce its effectiveness in attenuating noise . Consult instructions for use for proper fit .
The level of noise entering a person's ears 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 .
: For noise environments dominated by frequencies below 500 Hz, the
C-weighted environmental noise level should be used . Earmuffs must be worn at all times in
noisy surroundings for proper protection . Although hearing protectors can be recommended for
8
US-EN
Steel, PU
PU
Frequency in Hz
250
500
1000
14 .3
20 .3
28 .5
1 .6
2 .2
2 .7
2000
3150
4000
32 .4
36 .9
40 .7
2 .4
3 .2
3 .4
6300
8000
41 .3
38 .2
3 .8
3 .1
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