3M 56764-case E-A-R fit Dual-Ear Validation System 393-1100
$2,579.52$2,793.95
Description
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)
