3M PELTOR WS ALERT MRX21A1WS7 Guía Rápida página 4

B: STANDARD EN 352-1:2020
3M strongly recommends personal fit testing of hearing protectors. Research suggests that users may receive less noise reduction
than indicated by the attenuation label value(s) on the packaging due to variation in fit, fitting skill, and motivation of the user. Refer to
applicable regulations and guidance on how to adjust attenuation label value(s). In the absence of applicable regulations, it is
recommended that the attenuation label value(s) be reduced to better estimate typical protection.
B:A Headband earmuffs with foam cushions
MRX21A1WS7
B:2 MV (dB)
B:3 SD (dB)
B:4 APV = MV - SD (dB)
B:6: S, M, L
C) STANDARD EN 352-4:2020
C:A Criterion levels
C:1
H
116 dB(A)
M 110 dB(A)
L 98 dB(A)
D) STANDARD EN 352-6:2020
D:A External wireless safety related audio input
D:1 Input (dBFS)
D:3 Criterion input signal (dBFS)
D:4 SPL for maximum input signal (dB(A))
D:5:Time equivalent to 82 dB(A) over 8h (hh:mm)
for maximum input signal
125 250 500 1000 2000 4000 8000
14.5 19.3 29.6 33.3 38.0 39.3 35.7
2.3 2.0 1.8
12.2 17.3 27.8 30.6 34.8 36.4 32.3
Bluetooth
-39
-34
-29
-24
-19
-14
B:1 f (Hz)
2.7 3.2 2.9 3.4
D:2 Sound output level (dB(A))
75.5
76.0
76.0
76.2
76.3
76.3
N/A
76.3 dB(A) at -14 dBFS
> 24h at -14 dBFS
B:5
H M L SNR
37.0 29.3 21.2 31.5
2.1 1.4 1.8 1.3
35 28 19 30
404 g