3M H7A Peltor Optime 101 Over-the-Head Earmuffs
- Listen-only headband headset
- Offers attenuation at the push a button
- Earcup button for easy switching to listening mode without lifting off the earmuff
- Listen-through capability limits the pass-through sound to 87 dB
- Automatically switches to full protection after 30 seconds or when the button is pressed again
- Earcups feature liquid and foam-filled comfort cushions for optimal seal and long wear
- Noise Reduction Rating (NRR): 27 dB, CSA Class A
3M recommends fit testing of hearing protectors.
When NRR is used to estimate typical workplace protection, 3M recommends that the NRR be reduced by 50% or in accordance with applicable regulations.
|3M H7A Peltor Optime 101 Ear Muff Octave Band Attenuation Data|
|Frequency (Hz)||Mean Attenuation (dB)||Standard Deviation (dB)|