Western Safety Products 66452 プリント

SKU 66452 

Page 2

Use as intended only.

4. 

Inspect before every use; do not use if parts 

5. 

loose or damaged.
Maintain product labels and nameplates.  

6. 

These carry important safety information.  

If unreadable or missing, contact Harbor 

Freight Tools for a replacement.

Adjust the band to proper position.

1. 

Pull hair out of the way and out from beneath 

2. 

the muffs.
Adjust the height of the cups so they fully 

3. 

enclose the ears and the cushions press 

equally around the ear.  Put the ear muff with 

the controls on the right ear.
It is important that cushions seal completely 

4. 

around the ear.
Always wear ANSI-approved safety glasses 

5. 

when working with tools and equipment. 

When using these ear muffs with safety 

glasses, the safety glasses must have thin 

temples that fit closely around the head or 

thin straps; this will help ensure a good fit 

and better protection.
Press the black power button located above 

6. 

the control dial to activate the radio.  Press-

ing the button again will toggle to listen 

mode, allowing you to hear outside noise.
Turn the dial clockwise to raise the radio 

7. 

volume.  The dial can also be used to turn 

off the radio by turning it all the way counter-

clockwise until the power “clicks” off.
Press the SCAN button to toggle through 

8. 

radio stations.
Press the RES button to reset the scan at the 

9. 

bottom of the FM dial.
For MP3 access, plug cord into outlet at bot-

10. 

tom of right earmuff.

Turn off the Ear Muffs.

1. 

Insert a coin or large flat-edge screwdriver 

2. 

(not included) into the slot at the bottom of 

the left ear cup and pry off ear cushion.
Remove the outer foam, exposing the two AA 

3. 

batteries.

Remove old batteries and replace with two 

4. 

new AA batteries, making sure to install ac-

cording to indicated polarity.
Replace outer foam and snap ear cushion 

5. 

back into place.

record serial number Here: 
note: If product has no serial number, record 

month and year of purchase instead.

note: Replacement parts are not available.

The EPA has selected the NRR as the measure of a 

hearing protector’s noise reducing capabilities. Harbor 

Freight Tools makes no warranties as to the suitability 

of  the  NRR  as  a  measure  of  actual  workplace 

protection since such protection is highly dependent 

on user training, motivation, and utilization.  A better 

estimate of workplace protection can be obtained by 

derating the labeled NRR by 50%.
The NRR calculated from this attenuation data is 26.  

Improper fit of this device will reduce its effectiveness in 

attenuating noise.  Consult instructions for proper fit.
The level of noise entering a person’s ear, when a hearing 

protector is worn as directed, is closely approximated by 

the difference between the A-weighted environmental 

noise and the NRR.

ATTENUATION DATA ANSI S3.19-1974
Test

Frequencies (Hz) 125

250

500 1000 2000 3150 4000 6300 8000 NRR

Mean

Attenuation (dB)

9.0

19.8 31.0 34.8 36.4 38.3 39.1 40.9 37.7

27

Standard

Deviation (dB)

2.9

5.4

5.4

4.8

3.7

3.7

3.0

3.7

3.7

Example:
1.) The environmental noise level as measured at the ear is 92  

     dBA.
2.) The NRR is 26 decibels (dB).
3.) The level of noise entering the ear is approximately  

      equal to 66 dBA.
cautIon! For noise environments dominated by 

frequencies below 500 Hz, the C- weighted environmental 

noise level should be used.
The NRR used in the above example was achieved under 

laboratory conditions.
Although hearing protectors can be recommended for 

protection against harmful effects of impulsive noise, 

the Noise Reduction Rating (NRR) is based on the 

attenuation of continuous noise and may not be an 

accurate indicator of the protection attainable against 

impulsive noise such as gunfire.

REV 08l