3M E-A-Rfit Dual-Ear User Support

3M™ E-A-Rfit™ Dual-Ear Validation System User Support

The purpose of this information is to provide training and software resources for users of the system.

Request a Demo
  • The 3M™ E-A-Rfit™ Dual-Ear Validation System allows you to identify the amount of protection that a worker is receiving from their hearing protector. For more information, see the Getting Started section below.

    If you are looking for support for the 3M™ E-A-Rfit™ Validation System Version 4, click here.

  • Getting Started

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

    1. Purchase a 3M™ E-A-Rfit™ Dual-Ear Kit from your 3M distributor. This kit 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™ Dual-Ear Software in the Software & Training Resources section on this page.

Technical Support

Most messages are answered within two business days or less; however, some replies require further investigation or clarification.

If you need technical assistance by telephone, please call 1-800-243-4630 then select menu options 1-2-5.

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

    3M™ E-A-Rfit™ Repair Service Guide (PDF, 28 KB)

    US Customers:
    If you wish to request service and/or repair of your 3M™ E-A-Rfit™ Equipment, please contact 1-800-328-1667.

    Outside US Customers:
    Please contact your local 3M Technical Service person to coordinate the service or repair.

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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