Description
Model H6740-M
Product # : 40416G-58
Behind the Head (BTH) Style
- Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
- PTT button conveniently located on headset ear dome
- Behind-the Head, dual ear style
- Undercut, Comfort-Gel ear seals for maximum comfort
- Quality components and rugged construction
| 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 | |