Users Manual
“Pairing complete”
“Connected”
A) ANSI S3.19-1974
Headband with foam cushion
Art nr MT73H7A4610WS6NA, MT73H7A4610NA
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
Weight
A:2 Mean attenuation (dB) (M
f
) 19.5 24.8 35.2 36.6 38.2 38.0 38.0 38.7 39.1
27
A:3 Standard deviation (dB) (s
f
) 2.4 3.1 3.0 3.3 2.9 3.2 3.4 2.1 2.4 A 449 g
Backband with foam cushion
Art nr MT73H7B4610WS6NA, MT73H7B4610NA
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
Weight
A:2 Mean attenuation (dB) (M
f
) 18.0 25.8 33.7 35.8 37.5 38.7 41.0 40.4 40.5
27
A:3 Standard deviation (dB) (s
f
) 3.2 3.0 3.2 2.2 2.2 2.4 3.6 3.5 2.1 A 434 g
Helmet attachment with foam cushion on helmet 3M
TM
H-700
Art nr MT73H7P3E4610WS6NA. MT73H7P3E4610NA
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
Weight
A:2 Mean attenuation (dB) (M
f
) 19.1 21.9 33.5 36.7 36.4 37.6 39.2 38.2 36.7
25
A:3 Standard deviation (dB) (s
f
) 3.2 3.0 3.3 3.3 2.9 2.8 3.4 2.7 3.8 A 472 g
Headband with gel cushion
Art nr MT73H7A4610WS6NA, MT73H7A4610NA
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
Weight
A:2 Mean attenuation (dB) (M
f
) 19.7 23.1 33.4 41.0 39.3 41.1 41.2 40.9 39.0
27
A:3 Standard deviation (dB) (s
f
) 2.5 2.6 2.7 3.0 3.9 3.8 3.7 2.0 2.1 A 509 g
Backband with gel cushion
Art nr MT73H7B4610WS6NA, MT73H7B4610NA
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
Weight
A:2 Mean attenuation (dB) (M
f
) 17.7 22.4 33.1 39.1 37.6 38.8 40.5 40.5 41.8
27
A:3 Standard deviation (dB) (s
f
) 3.0 2.2 3.1 2.5 2.3 2.6 2.3 3.1 3.5 A 493 g
Helmet attachment with gel cushion on helmet 3M
TM
H-700
Art nr MT73H7P3E4610WS6NA, MT73H7P3E4610NA
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
Weight
A:2 Mean attenuation (dB) (M
f
) 18.5 21.5 30.7 38.2 38.0 39.2 39.8 40.2 39.8
25
A:3 Standard deviation (dB) (s
f
) 2.4 2.9 3.3 2.9 3.0 3.9 3.6 3.0 2.9 A 532 g
“U.S. EPA species the NRR as the measure of hearing protector noise reduction. However, 3M makes no warranties as to the
suitability of the NRR for this purpose. 3M strongly recommends personal t 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 t,
tting skill, and motivation of the user. Refer to applicable regulations for guidance on how to adjust attenuation label values. It is
recommended that the NRR be reduced by 50% to better estimate typical protection.”
L:1) Radio Channel Frequencies
FRS US/Canada
Channel Radio Service
Type, Canada
Radio Service
type, US
Frequency
(MHz)
1 FRS 1 FRS 1 462.56250
2 FRS 2 FRS 2 462.58750
3 FRS 3 FRS 3 462.61250
4 FRS 4 FRS 4 462.63750
ANSI S3.19-1974
ANSI S3.19-1974
ANSI S3.19-1974
ANSI S3.19-1974
ANSI S3.19-1974
ANSI S3.19-1974