An otoplastic may not attenuate 100%, because you still need to hear some sounds during your work. Therefore, a sound channel is created in the otoplasty. The channel has a filter to attenuate the sound. The attenuation of our filters varies by pitch. This allows us to filter out noise and let in useful sounds, such as voices, sirens or horns.
Ronell offers various filters. Based on your work environment, you can choose a suitable filter. The ideal attenuation reduces the average volume per day to +/- 80 decibels. Ask our hearing advisor for advice.
* Gray, Red and Purple are officially according to “EN 352-2: 2002” and (EU) 2016/425. certified. Therefore, these filters can be used as PPE in the workplace.