3M 7000052883 393-2004-50 Probed Test Plug

Y-Harness for mounting a boom microphone to the left earcup and enabling connection to a PTT adapter for two-way radio communication

• These test earplugs are modified with a probe tube for use during earplug fit testing with the 3M E-A-Rfit Validation System
• 3M PSD products are for occupational use only
• The NRR may overestimate the hearing protection provided during typical use