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
European Comm. for Standardization (CEN)
The product has been tested and approved in accordance with
personal protective equipment (PPE) standards: EN 352-2:2020,
EN 352-9:2020, and EN 352-10:2020�
The earplugs are provided with level-dependent attenuation and
safety-related audio input Check correct operation before use� If
distortion or failure is detected, refer to the troubleshooting advice�
B4: Frequency (Hz)
B5: Mean Attenuation (dB)
B6: Standard Deviation (dB)
B7: Assumed Protection Value (APV) (dB
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)
Please note that the SNR is based on the continuous wear
of the product�
The output of the audio circuit of the hearing protector may
exceed the exposure limit level
Please note, ISOtunes FREE 2�0 provides an entertainment
audio facility�
The audibility of warning signals at a specific workplace may be
impaired while using the entertainment facility�
SafeMax™ Technology
ISOtunes® FREE 2�0 incorporates SafeMax™ Technology, therefore
its volume output has been limited to 85 decibels (IT-73 & IT-74),
or 79 decibels (IT-72) � ISOtunes® devices with SafeMax™
Technology are OSHA and ANSI compliant�
Cleaning and Maintenance
TRILOGY™ foam eartips should be regularly inspected for
deterioration, cracking, or other damage� The eartips can be
cleaned in between uses with a damp cloth and water� Over time,
the eartips should be replaced�
• Clean your ISOtunes FREE 2�0 by gently wiping them
with a clean, damp cloth with mild soap�
• Do not immerse the earbuds in water�
• Do not use abrasive cleaning solvents to clean the earbuds�
• If the earbuds get wet from sweat or rain, please discontinue
use and allow them to dry�
WARNINGS
ISOtunes® FREE 2�0 does an excellent job of blocking outside
noise� As such, ISOtunes® FREE 2�0 should NOT be used in
environments where users need to be fully aware of their
surroundings for personal safety reasons� For example, do NOT
use them while driving a car or riding a motorcycle� Similarly, do
NOT use them when riding a bicycle outside� The user is solely
responsible for ensuring that ISOtunes® FREE 2�0 is used ONLY
in safe environments�
This product may be adversely affected by certain chemical
substances, such as bug spray and sunscreen� Further information
may be sought from the manufacturer�
Recommendations
The wearer should ensure the product is properly cleaned and
dry before and after use� Storage should be in a clean and dry
location between -20 °C and 50 °C� The battery should not be fully
discharged before long term storage�
EN | 14