E-A-Rfit™ Dual-Ear Validation System 393-1100

Model 70071674116 · 3M

Overview

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.

Key features

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
Optional Cloud enables stored centralized data, multiple fit testing systems operating simultaneously across sites, and access restricted to.
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)

Applications

Engineering and fabrication shops
Power plants and compressor rooms
Mining and quarrying
Textile and printing

Standards and certification

Supplier: ISO 9001:2015 certified

PRODUCT DATASHEETDoc. SSLS/DS/HR-005 · Rev. 01 · 13-Oct-2026

E-A-Rfit™ Dual-Ear Validation System 393-1100 – technical data

Technical specifications

Brand	3M
Model	70071674116
Case Quantity	1
Earplug Size	One Size Fits Most
Product Series	E-A-Rfit
Product Type	Fit Test Kit
Recommended Application	Assembly, Demolition, Facility Maintenance, Grinding, Health & Safety Testing, Sanding, Welding
Recommended Industry	Automotive, Food Processing, Food Safety, General Manufacturing, Metal Fabrication, Military Maintenance, Repair & Operation (MRO), Mining, Oil & Gas, Pharmaceutical, Transportation

Ordering information

Brand	3M
Model	70071674116

Inspection and care

Insert plugs with clean hands. Replace disposable plugs after each use. Inspect ear muff cushions for cracks and replace the hygiene kit at the interval the manufacturer gives.

Storage

Store in a cool, dry place away from direct sunlight, heat and chemicals.

Data given in good faith from manufacturer information and subject to change without notice. Select PPE based on a site risk assessment. Scan the code for the product page.