This version of Pyramex earmuffs uses an electronic suppression device that allows normal sounds, ambient noises, and voices through the earmuff, but blocks out harmful noises. This is a must for workers in high noise areas that still need to communicate with one another.
In the neutral position on the sound dial, the earmuff has a NRR rating of 20. Finally, the Pyramex PM4011 earmuff comes in an attractive black color, and adjust to fit most head sizes.
- Offers electronic suppression of dangerous impulse noises common to industrial users and shooters.
- Amplifies surrounding voices, important signals and warnings
- NRR 20db when used in neutral position
- 3.5 mm jack to connect to MP3
- Soft head pad for all day comfort
- Foam-filled padded ear cups fit securely and comfortably over the ear
- Electronics are designed to limit amplified sound levels to 83db
- Batteries not included
- Individually packaged
- Exceeds ANSI S3.19 Requirements