3M E-A-R Classic Probed Test Plugs 393-2003-50, 50 EA/Case replacement radio antenna and public safety communications requiring

and public safety communications requiring maximum signal strength

commercial fleets

no touching the earplug tip with dirty hands

Earpiece Design Over-the-ear Earpiece Type Monaural Microphone

58 MHz applications with 2dBi gain

3M E-A-R Classic Probed Test Plugs 393-2003-50, 50 EA/Case replacement radio antenna and public safety communications requiringThese test earplugs are modified with a probe tube for use during earplug fit testing with the 3M E A Rfit Validation System 50 PR Per Case 3M PSD products are for occupational use only. *The NRR may overestimate the hearing protection provided during typical use. Earplugs equipped with a probe tube for fit testing using the 3M E A Rfit Validation System. Cannot be used for hearing protection. These test earplugs are modified with a probe tube for use