NITEforce EarMuffs Electronic Hearing Protector User Manual
- June 4, 2024
- NITEforce
Table of Contents
USER MANUAL
INSTRUCTIONS FOR USE
The Electronic Hearing Protector with build active level dependent function. The noise limiter filter out (cut off) harmful noise sounds over 82 dB. Loud impulse sounds are effectively blocked out and limited to safe levels. Electronic earmuffs are amplifying low noises for enhanced hearing. This earmuff is provided with electronic audio jack input for connection with MP3 players, cell phones, and two-way radios.
LED light Power ON/OFF switch
The LED light will indicate that earmuffs are working (ON)
Gel Ear cushion
Gel-filled cushions maintain a comfortable, noise-blocking seal around the
ears.
Auto shut-off function 4 hours
After automatic shut-off, wait 5 seconds. Turn earmuff on again to another 4
hours of working time.
Fitting Instructions
- Extend the headband before use.
- Place the earcups over the outer ear, ON/OFF wheel switch on the right side of the head.
- Adjust the headband by moving it up and down in the side headbands. The ear cushions should seal firmly against the head.
EarMuff Overview
2 x AAA Alkaline Batteries
Open the battery lid by pushing the battery lid, then slide upward with your
thumbs. Ensure the battery lid is closed completely.
Insert the two 1.5V AAA batteries. Make sure that the “+” and “-” poles are in
the correct position. Finally, ensure that the battery lid is closed
completely. Change the batteries whenever the sound reproduction is weakened
or impaired.
Remove the batteries out of the battery compartment, when Earmuffs are not
used for example during storage. The warranty is not covering battery-related
or battery acid leakage-related technical failures.
Cold weather will reduce battery output power life. Avoid poor-quality
alkaline batteries. Avoid mixing different brands or types and ages of
batteries. Use AAA Alkaline.
Attenuation Data
According to Standards EN352-1:2002, EN352-4:2001 and EN352-6:2002
NRR 22dB| | | | | | | | |
---|---|---|---|---|---|---|---|---|---
Frequency (Hz)| 125| 250| 500| 1000| 2000| 3150| 4000| 6300| 8000
Mean Attenuation
(dB)| 15.1| 15.7| 22.2| 29.4| 34.1| 38.7| 41.3| 41.3| 41
Standard Deviation (dB)| 3.2| 2.8| 1.8| 2.5| 3| 3.3| 3.1| 2.9| 3.2
Cautions
For the noise environments dominated by frequencies below 500 Hz, the
C-weighted environmental noise level should be used. A hearing protector must
be worn at all times in noisy surroundings for proper protection. Although
hearing protectors can be recommended for protection against the 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. Constant or
repetitive exposure to impulsive noise may lead to serious injury. Earmuff
must be properly fitted to attenuate noise effectively.
Cleaning & Maintenance & Storage
Cleaning: Do not use solvents for cleaning. Clean with a damp cloth
soaked with a warm soap solution and allowed to dry before re-use. Do Not Use
abrasive brushes or materials which damage the foam pads or cushions. Further
information regarding cleaning agents from the manufacturer.
Maintenance: Replace the cushions as necessary, at least every 6 months.
Use the manufacturer’s original replacement cushions. Pull off the old
cushions and press new ones firmly into their proper place. Cups should not be
opened! If the cups are opened warranty is void.
Storage: Storage in a clean, dry, and dust-free place. Moisture may occur
inside the ear cups after long-term use. It is important to dry the moisture
from the cups to prevent corrosion. It is recommended to turn temporarily the
ear cups outwards to allow the foam linings to dry. Remove AAA
batteries always from the unit during storage. The warranty is void if the
battery acid has been leaking inside the battery compartment.
ASK FROM YOUR DEALER IN CASE IF THERE ARE ANY OPEN QUESTIONS REGARDING THE PRODUCT OR ITS USE!
1 YEAR WARRANTY
This product is warranted to be free from defects in material and workmanship
for 1 year from the original date of purchase when purchased through an
authorized dealer. NITEforce will, at its option, repair or replace your
product with the same or comparable model, free of charge (shipping charges
may apply) for a period of (1) one year from the original date of purchase in
the event of a defect in materials or workmanship occurring with normal use.
This warranty only extends to the original retail purchaser. A purchase
receipt or other proof of date of original purchase is required before
warranty performance. The warranty on any replacement product provided under
this warranty shall be for the unexpired portion of the warranty period
applicable to the original product. This warranty extends solely to failures
due to defects in materials or workmanship occurring during normal use. It
does not cover the normal wear of the product.
This warranty is void if:
- The unit has been used incorrectly, opened, or punctured
- The unit has been immersed in water or other liquids, allowed to be filled with dirt or dust or otherwise physically misused
- The 1 year warranty period has expired
- If the product fails to function properly as a result of an accident, misuse, abuse, neglect, mishandling, misapplication, non-compatible batteries, faulty installation, setup, adjustments, improper maintenance, alteration, maladjustment of controls, modification, power surges, service by anyone other than NITEforce or NITEforce authorized service center or acts beyond the manufacturer’s control.
Accredited Testing Lab:
Michael & Associates, Inc.
2766 W. College Ave Suite 1
State College, PA 16801, USA
Phone 814.234.7042
Fax 814.235.1381
www.michaelassociates.com