THUNDER are earmuffs for protection in noisy working environments with multi-level adjustment, ergonomic folding cups, soft headband and weighing 237g.
- SNR-VALUE 32.1dB
- H-VALUE 35.5dB
- M-VALUE 29.7dB
- L-VALUE 21.1dB
Technical specifications
| Frequency (Hz) | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
| Average value M(dB) | 20.5 | 17.0 | 22.9 | 31.3 | 39.5 | 37.4 | 43.0 | 40.8 |
| Standard deviation S(dB) | 4.3 | 3,4 | 2.8 | 2.5 | 3.0 | 4.6 | 3.1 | 5.1 |
| Protective efficiency APV(dB) | 16.2 | 13.6 | 20.1 | 28.8 | 36.5 | 32.8 | 39.9 | 35.6 |
