David Clark MODEL H6240-M Behind the Head (BTH)
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Behind-the Head, dual ear style – wear with or without hard hats or helmets
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PTT button conveniently located on headset ear dome
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Quality components and rugged construction
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Switch for PTT/VOX on the ear cup
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U6210 inline body switch PTT can be added between headset and cord as an additional PTT button.
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Undercut, Comfort-Gel ear seals for maximum comfort
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