Electronic Earmuffs with radio(NRR=25dB FM)
Electronic Earmuffs with radio
1FM radio
2EN352-8 EN352-4
3Uses 2xAA batteries
4color:various
DIGITAL HEARING PROTECTOR RADIO
Is an attenuating hearing protector with a built-in digital FM stereo radioThe noise-suppressed stereo sound reproduction is superb even in noisy environment.This hearing protector radio is specially designed to improve safety and motivation when you work in noisy environments.Examples of uses include while using your chainsaw,leaf blower or any other time you want to listen to the radio undisturbed.To ensure full satisfaction with thw product,please read the entire instruction manual.
(A)FEATURES
1.wide headband with soft padding for ideal comfort throughout your working day.
2.low, two-point attachment and easy height adjustment with no protruding parts.
3.stainless spring steel headband wires providing an even distribution of pressure around the ears.
4.wide cushions for low pressure,effective sealing and good comfort.
5.radio on/off and volume control.
6.FM toggle
7.Antenna with high reception sensitivity.
8.preset/memory/buttons.
9.channel seek/scan-frequency range FM 88-108 MHz
10.Digital display screen with low battery indicator.
11.battery cover for easy battery replacement.
(B)INSTRUCTIONS FOR USE
INSTALLING BATTERIES:
Open the battery cover(B:1).Insert the two 1.5 V AA batteries (alkaline batteries recommended).Make sure that the +and –poles are correctly positioned.Replace cover.
ADJUSTING THE HEADBAND:
Slide out the earcups and place the hearing protector radio over your ears so that the cushions fully enclose the ears and fit snugly against the head.(B:3)Adjust the height of both cups while holding the headband flat on your head,untils your have a snug, comfortable it.The headband should the top of the head.
IMPORTANT:
For the best protection,brush hair away from the head.Spectacle temples should be as thin as possible and fit close the head.
TENUATION DATA
ANSIS3.19.1974
FREQ.HZ | 125 | 250 | 500 | 1000 | 2000 | 3150 | 4000 | 6300 | 8000 | NRR | CSA CLASS |
Mean.Att. | 16.0 | 21.4 | 25.7 | 35.7 | 32.0 | 39.9 | 40.7 | 36.0 | 34.0 | 22 | B |
Std.Dev. | 3.5 | 3.5 | 2.4 | 3.7 | 3.0 | 3.0 | 3.3 | 4.4 | 6.1 |
Noise Reduction 25decibels Rating (when used as directed) THE RANGE OF NOISE REDUCTION RATINGS FOR EXISTING HEARING PROTECTORS IS APPROXIMATELY 0 TO 30 (HIGHER NUMBERS DENOTE GREATER EFFECTIVENESS) Aearo Technologies Southbridge ,MA Digital WorkTunes 22
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The NRR calculated from these laboratory based attenuation EXAMPLE
1.The environmental noise level as measured at the ear is 92dba
2.the NRR is 25 decibels(db)
3.the level of noise entering the ear is approximately equal to 70dba
