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

Earpiece Design Over-the-ear Earpiece Type Monaural Microphone

✅ Battery Life: 350 hours of continuous operation

5-inch chrome/stainless steel whip and complete base coil assembly with NMO mount compatibility

commercial fleets

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