Headband H520A

Seamless height adjust-

ment. Flexible adaptation

to size and shape of head.

HY52 Safety kit

Optime II has been developed for demanding noise-hazard environments and muffles even extremely low frequen-

cies to a maximum degree. The sealing rings are filled with a unique combination of liquid and foam. The result is

an optimum seal with low contact pressure, which provides snug comfort even during long-time use. The sealing

rings have ventilation channels and are covered with soft, patterned, hygienic foil. Optime II is a suitable choice for

environments with substantial industrial noise or construction machinery, airports and agricultural work.

Neckband H520B

For independent use in conjunction with

protective helmet, for example.

Helmet attachment H520P3

Slot attachment with quick mounting

without tools. Working, airing or park

positions. Attachment for visor and rain

protection.

SNR

34 dB

H

29 dB

M

20 dB 31 dB

L

210 g

14.6

20.2

32.5

39.3

36.4

34.4

40.2

1.6

2.5

2.3

2.1

2.4

4.0

2.3

13.0

17.7

30.2

37.2

34.0

30.4

37.9

Frequency 2

Mean att. 3

**

Stand. dev. 4

H520A

APV

Model

125

250

500

1000 2000 4000 8000

SNR

34 dB

H

29 dB

M

20 dB 31 dB

L

195 g

14.7

20.4

32.3

39.6

36.2

35.4

40.2

1.8

2.6

2.5

2.2

2.4

4.2

2.4

12.9

17.8

29.8

37.4

33.8

31.2

37.8

Frequency 2

Mean att. 3

**

Stand. dev. 4

H520B

APV

Model

125

250

500

1000 2000 4000 8000

SNR

34 dB

H

28 dB

M

20 dB 31 dB

L

230 g

14.5

20.3

32.6

39.1

35.1

34.7

39.8

1.8

2.6

2.4

2.5

2.3

2.7

2.5

12.7

17.7

30.2

36.6

32.8

32.0

37.3

Frequency 2

Mean att. 3

**

Stand. dev. 4

H520F

APV

Model

125

250

500

1000 2000 4000 8000

Folding headband H520F

Thin and supple headband for combina-

tion with headgear. Can easily and

quickly be folded out/up.

SNR

34 dB

H

28 dB

M

19 dB 30 dB

L

235 g

14.1

19.4

32.0

39.9

36.2

35.4

39.2

2.3

2.7

2.7

2.4

2.6

4.4

2.6

11.8

16.7

29.3

37.5

33.6

31.0

36.6

Frequency 2

Mean att. 3

**

Stand. dev. 4

H520P3*

APV

Model

125

250

500

1000 2000 4000 8000