Headband H540A

Broad, soft head cushion

for best comfort even

when worn for long inter-

vals.

HY54 safety kit

Optime III is a super-muff, and has been developed for use in extremely noisy environments. The protection is based

on new technology with a double casing that minimises resonance in the holder casing. This results in maximum

high-frequency muffling, while at the same time it’s still easy to understand speech and signals. An acoustic con-

nection between the inner volume and the volume between the casings in its turn provides maximum low-frequen-

cy muffling. The sealing rings are broad and filled with soft plastic foam for the best fit and low contact pressure.

Effective protection and best comfort are the hallmarks of Optime III.

Helmet attachment H540P3

Helmet combination with slot attachment.

The protector can be set in the working,

airing or park position.

SNR

40 dB

H

32 dB

M

23 dB 35 dB

L

285 g

17.4

24.7

34.7

41.4

39.3

47.5

42.6

2.1

2.6

2.0

2.1

1.5

4.5

2.6

15.3

22.1

32.7

39.3

37.8

43.0

40.0

Frequency 2

Mean att. 3

**

Stand. dev. 4

H540A

APV

Model

125

250

500

1000 2000 4000 8000

SNR

40 dB

H

32 dB

M

23 dB 35 dB

L

270 g

17.5

24.5

34.5

41.4

39.5

47.3

42.0

2.3

2.7

2.0

2.2

2.0

4.4

2.8

15.2

21.8

32.5

39.2

37.5

42.9

39.2

Frequency 2

Mean att. 3

**

Stand. dev. 4

H540B

APV

Model

125

250

500

1000 2000 4000 8000

SNR

40 dB

H

32 dB

M

22 dB 34 dB

L

310 g

17.1

24.5

34.8

40.2

39.6

46.7

43.1

2.3

2.8

2.2

2.0

1.8

4.2

2.5

14.8

21.7

32.6

38.2

37.8

42.5

40.6

Frequency 2

Mean att. 3

**

Stand. dev. 4

H540P3*

APV

Model

125

250

500

1000 2000 4000 8000

Neckband H540B

Optimum shape with no protruding parts.

Thin, adjustable headband for comfortable use.