Jul 09
The Single Number Rating (SNR) and Noise Reduction Rating (NRR) determines the degree of noise cancellation the ear defenders or earplug provides. When choosing ear defenders, it is important to note its SNR/NRR and ensure that after deduction the noise passing through the ear defenders is below 85dB. This is to ensure that prolonged exposure …
Jul 02
Filtered v.s Non filtered Ear Defenders Filtered ear defenders allow essential sounds of lower decibels to be heard through the ear defenders to your ears, such as that of normal speech and ambient sounds such as the telephone ringing. At the same time, filtered ear defenders block out undesirable sounds of higher decibels which are …