3M™ E-A-Rfit™ User Support

3M™ E-A-Rfit™ Validation System Version 4 Support

  • The 3M™ E-A-Rfit™ Validation System allows you to identify the amount of protection that a worker is receiving from their hearing protector. The purpose of this information is to provide training and software resources for users of the system. See Getting Started below.

    List of Test Plugs for North America

    If you are looking for support for the 3M™ E-A-Rfit™ Dual-Ear Validation System, click here.

Getting Started

  • In order to use the 3M™ E-A-Rfit™ Validation System to measure hearing protector attenuation, you will need to:


    1. The 3M™ E-A-Rfit™ Kit model 393-1000 includes the E-A-Rfit hardware and accessories you need to get started along with a sample of probed test earplugs. Once you begin using the system, you will need to purchase additional probed test earplugs for use during testing.
    2. Download the current version of the 3M™ E-A-Rfit™ Software and the installation guide using the links in the Installation Guide & Software Downloads section.
    3. 3M Technician Code Request.



Calibration & Repair of 3M™ E-A-Rfit™ Systems

Customer Service: 1-800-328-1667 Customer Service: 1-800-328-1667 Technical Service: 1-800-243-4630 Technical Service: 1-800-243-4630 Distributor Login
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