3M™ E-A-Rfit™ Power Supply is a replacement part for the 3M™ E-A-Rfit™ Dual-Ear Validation System The 3M™ E-A-Rfit™ Dual-Ear Validation System makes it easy to measure every employee's unique level of protection in hearing protection fit testing and takes the guesswork out of managing compliance in your hearing conservation program.

• Replacement part for the 3M™ E-A-Rfit™ System
• Power cord
• Replacement part
• NOTE: 3M strongly recommends fit testing of hearing protectors. Research suggests that many users will receive less noise reduction than indicated by the NRR due to variation in hearing protector fit, fitting skill and motivation of the user. If the NRR is used, 3M recommends that it be reduced by 50% or in accordance with applicable regulations.