ISOtunes LINK 2.0 Manual página 14

the difference between the A-weighted environmental noise level
and the Noise Reduction Rating (NRR). Improper fit of this device
will reduce its effectiveness in attenuating noise. Consult the
enclosed instructions for proper fitting.
A1: Frequency (Hz)
A2: Mean Attenuation (dB)
A3: Standard Deviation (dB)
Example:
1. The surrounding noise level measured at the ear is 100 dB.
2. The NRR of ISOtunes® LINK 2.0 is 25 dB.
3. The noise level entering the ear is approximately
equal to 75dB.
Please note that the 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.
EN 352
IT-49 ISOtunes LINK 2.0 EN 352 is certified according to the
product standards EN 352-1:2020, EN 352-6:2020, and EN 352-
8:2020.
Haven Technologies, INC. hereby declares that IT-49 ISOtunes
LINK 2.0 EN 352 conforms to the regulation (EU) 2016/425 and
the directive RED 2014/53/EU, which can be accessed at www.
ISOtunes.co.uk/pages/product-manuals.
B1: Frequency (Hz)
B2: Mean Attenuation (dB)
B3: Standard Deviation (dB)
B4: Assumed Protection Value (APV) (dB)
B5:
H = Hearing protection estimation for high
frequency sounds (f ≥ 2000Hz)
M = Hearing protection estimation for medium
frequency sounds (500 Hz < f < 2000Hz)
L = Hearing protection estimation for low
frequency sounds (f ≤ 500Hz)
SafeMax™ Technology
ISOtunes® LINK 2.0 incorporates SafeMax™ Technology,
therefore its volume output has been limited to 85 decibels (IT-
48) and 79 decibels (IT-49). ISOtunes® devices with SafeMax™
Technology are OSHA and ANSI compliant and, when designated,
meet the European Safety Standard EN352.
Cleaning and Maintenance
• Clean your ISOtunes LINK 2.0 by gently wiping them
with a clean, damp cloth with mild soap.
• Do not immerse the hearing protector in water.
• Do not use abrasive cleaning solvents to
clean the hearing protector.
If the hearing protector gets wet from sweat or rain, please
discontinue use and turn the earmuff outwards and allow to dry.
The ear cushions and foam liners should be regularly inspected
for deterioration, cracking, or other damage.
Materials:
• Ear Cushion: PU + Memory Foam
• Casing: ABS
• Key Pad: Silicon
• Headband: Stainless Steel + TPE
• Headband Bracket: ABS
This product comes with a Lithium Battery Pack. The Battery
Pack can be recharged by plugging the one end of the included
cable into a USB outlet and the other end into the product's
charging port located underneath the rubber cover on the
bottom of the left earcup.
The batteries can be checked by removing the battery cover.
Slide the latch to release the door.
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