Description

Model H6040

 

Product # : 40416G-01

 

Behind the Head Style (BTH)

  • Noise-shielded M-77 electret microphone for clear communication
  • BTH style for applications requiring hard hats or protective headgear
  • Foam-filled ear seals for maximum comfort
  • Rugged construction
  • Flex boom for easy, precise microphone placement
  • 30 in. straight cord
  • Noise Reduction Rating (NRR): 23 dB

Noise Attenuation Data

NRR
23 dB
Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
Attenuation (dB) 14.1 21.9 29.4 32.0 29.7 35.2 36.2 38.1 37.4
Standard Deviation 2.5 2.5 3.0 2.7 2.2 1.7 2.5 2.9 2.8

 

Note: now obsolete