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3M 56764-case E-A-R fit Dual-Ear Validation System 393-1100

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$2,600.61

$ 99 .00 $99.00

In Stock
  • Dual-element, dual-microphone assembly is the key to the system, measuring sound levels inside and outside the hearing protector
  • Science-based, quantitative testing gives accurate reports of hearing protection
  • Fast, clear, accurate results are obtained in just seconds and can be printed or saved electronically for future reference
  • System determines personal attenuation rating (PAR) of individual workers and helps remove measurement, fitting, and spectral uncertainty
  • Dual-ear design saves time by measuring both ears simultaneously in under five seconds
  • System tests across 7 standard frequencies (125, 250, 500, 1000, 2000, 4000, 8000 Hz)


3M E-A-Rfit Dual-Ear Validation System helps determine whether workers are receiving adequate protection from their hearing protector by measuring across 7 standard frequencies in under five seconds, providing a detailed report on the noise attenuation performance of earplugs or earmuffs and a pass or fail rating for each individual person based on the employee's personal attenuation rating.