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WARNING!
Hearing protectors complying with EN 352-1 are of 'medium size range', 'small size range' or 'large size
range'. 'Medium size range' hearing protectors will fit the majority of wearers. 'Small size range' or 'large
size range' are designed to fit wearers for whom 'medium size range' hearing protectors are not suitable.
ATTENUATION DATA (table 2 & 3)
The attenuation values of the hearing protectors are tested according to EN 4869-2:2018 (with the
electronics switched off) and the results are noted in the table 2 & 3. Explanation:
75302 Supreme Pro Headband (Table 2)
75302-X Supreme Pro-X Headband (Table 2)
75302-X LED Supreme Pro-X LED Headband (Table 2)
76302 Supreme Pro Neckband (Table 3)
76302-X Supreme Pro-X Neckband (Table 3)
Attenuation value explanation:
f = Frequencies where attenuation value is measured
M
= Mean value
f
s
= Standard deviation
f
APV (M
–s
) = Assumed Protection Value
f
f
H = High frequency attenuation value (predicted noise level reduction for noise with L
–L
= –2 dB)
C
A
M = Medium frequency attenuation value (predicted noise level reduction for noise with L
–L
= +2 dB)
C
A
L = Low frequency attenuation value (predicted noise level reduction for noise with L
–L
= +10 dB)
C
A
SNR = Single Number Rating (the value which is subtracted from the measured C-weighed sound pressure
level, L
, in order to estimate the effective A-weighted sound pressure level inside the ear)
C
W = Gross weight of the hearing protector in gram, not including batteries
CRITERION LEVELS (table 4) Supreme Basic Line / Supreme Pro Line
Typical values in accordance with EN 352-4:2001/A1:2005, appendix A, with the volume set to
maximum. Table 4 key:
H = High frequency sound pressure level (L
–L
= 1,2 dB)
C
A
M = Medium frequency sound pressure level (L
–L
= 2 dB)
C
A
L = Low frequency sound pressure level (L
–LA = 6 dB)
C
Additional information about the hearing protectors, such as Declaration of Conformity, can be found
on www.sordin.com or from Sordin AB, Rörläggarvägen 8, SE-331 53 VÄRNAMO, Sweden.
THE FOLLOWING SUPPLEMENTARY INFORMATION APPLIES TO SUPREME, ONLY IN USA/CAN:
Tested according to ANSI Specifications, ANSI S3.19-1974
Information required by E.P.A:
The level of noise entering a person's ear, when hearing protection is worn as directed, is closely approxi-
mated by the difference between the A-weighted environmental level and the NRR. Example: The
environ mental noise level at the ear is 92 dB(A). The NRR is 23 decibels (dB). The level of noise entering
the ear is approximately equal to 69 dB(A).
CAUTION:
For noise environments dominated by frequencies below 500 Hz, the C-weighted environmental noise
level should be used. Improper fit of this device will reduce its effectiveness in attenuating noise.
Although hearing protections can be recommended for protection against harmful effect of impulse
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.
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