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3M™ E-A-Rfit™ Dual-Ear Microphone Assembly

Works in conjunction with the 3M™ E-A-Rfit™ Dual-ear Validation System to help employers determine whether workers are receiving adequate hearing protection from their hearing protector.

Supplier:  3M™ 7100077867

Catalog No. 19-122-402

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  • For use with 3M™ E-A-Rfit™ validation system
  • Tests both ears simultaneously in under five seconds
  • Inserts into back of E-A-Rfit Dual-Ear Enclosure Speaker Assembly
  • Connects to probed test plugs, test pods, or cushions to measure sound pressure levels outside and inside the hearing protector
  • Y-connector between right and left microphone denotes distance user should sit from speaker


3M™ products must be used in accordance with OSHA regulations, and the user instructions, warnings, and limitations accompanying each product.



E-A-Rfit™ Dual-Ear Validation System
Dual-Ear, Microphone Assembly


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