Electronic Earmuffs
Electronic Earmuffs
Electronic Earmuffs

Electronic Earmuffs

Negotiable /Piece

Min.Order:500 Pieces

Supply Ability:
20000 Piece / Pieces per Month
Port:
shanghai/ningbo
Payment Terms:
T/T L/C D/P D/A Credit Card PayPal

Quick Details View All >

Place of Origin:
Jiangsu, China
Brand Name:
olyga
Model Number:
EF3S31-1M

Suzhou Oulijia Electronic Co., Ltd.

Credit Member 4 years
Business Type: Manufacturer,Trading Company
Suzhou Jiangsu China
Main Products: Earmuff ,ABS Sensor

Product Details

Electronic earmuffs

1.    Various Colors available
2.     SNR=25dB
3.     CE: EN 352-4
4.     Size:15*10*13cm
5.     Wieght:0.220kg
6.     Amplify low-level sound.
7.     Automatically shuts off noise above 85 decibels (DB)
8.     Adjustable headband. 
9.     Two independent volume controls
10.Two wind-resistant, high-frequency, microphones.
11.Uses 4xAAA batteries (not included)
12.Easy to Change the batteries.
 

 

 

Instruction For Use

1 Extend headband to maximum open position and place the cups over the ears with the headband passing over the head.

2 Settle the head band in position on the head while adjusting the height of the ear cups up or down until they feel comfortable and the headband rests on the top of the head to support the muffs.

3 Make sure that the headband is evenly adjusted, left to right. The ear cushion should be a snug fit against the head.

4 Make sure to get as little air as possible between the ear cushions and your head. Muffs should be cleaned regulary with soap and water

 

CAUTION.

For noise environment dominated by frequencies below 500Hz, the C-weighted environmental noise level should be
used. Improper fit of this device will reduce its effectiveness in attenuating noise. Although hearing protection can be recommended for protection against the harmful effects of impulse noise, the Noise Reduction Rating is based on the

attenuation of continuousnoise

CAUTION.

For noise environment dominated by frequencies below 500Hz, the C-weighted environmental noise level should be
used. Improper fit of this device will reduce its effectiveness in attenuating noise. Although hearing protection can be recommended
for protection against the harmful effects of impulse noise, the Noise Reduction Rating is based on the attenuation of continuousnoise

 

 

H

M

L

SNR

30

23

15

25dB

 

Frequency HZ

125

250

500

1000

2000

3150

8000

6300

80000

Mean att.

12.3

14.8

25.0

33.8

30.4

34.9

36.1

39.0

36.1

Std dev.

2.9

2.8

3.5

3.1

3.6

3.0

4.9

4.1

4.9

Electronic EarmuffsElectronic EarmuffsElectronic EarmuffsElectronic EarmuffsElectronic Earmuffs

Contact Supplier

Ms. jane Dai General Manager Chat Now
Telephone
86-0512-52444883
Mobile
15895603101
Fax
86-0512-52444583
Address
Jiqiao Village, Shanghu Town Jiangsu

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