ISOtunes XTRA 2.0 Manual De Instrucciones página 12

XTRA 2.0 headphones are worn as directed, is closely
approximated by 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® XTRA 2.0 is 27 dB.
3. The noise level entering the ear is approximately equal to
73dB.
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.
EN352
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)
The EU declaration of conformity can be accessed at www.
isotunes.co.uk/EU-declaration-of-conformity
The products will be certified to the Product standard EN 352-
2:2002 and the PPE Regulation 2016/425
SafeMax™ Technology
ISOtunes® XTRA 2.0 incorporates SafeMax™ Technology,
therefore its volume output has been limited to 85 decibels (IT-
22 and IT-27) and 79 decibels (IT-25). ISOtunes® devices with
SafeMax™ Technology are OSHA, NIOSH, and ANSI compliant
and, when designated, meet the European Safety Standard
EN352.
Cleaning and Maintenance
Trilogy foam eartips are disposable. To ensure peak
performance, we recommend replacing TRILOGY™ Foam Tips
every three months or when they become soiled. In order to
purchase additional tips, please go to www.ISOtunes.co.uk
Clean your ISOtunes® XTRA EN352 by gently wiping them with
a clean damp cloth. Mild soap can be applied to the cloth.
Do not use abrasive cleaning solvents to clean the headset.
Avoid scratching the headset with sharp objects, as this may
cause damage. Keep the headset away from high temperature
areas.
• Clean your ISOtunes XTRA 2.0 by gently wiping
them with a clean, damp cloth with mild soap.
• Do not use abrasive cleaning solvents to
clean the hearing protector.
The TRILOGY™ foam eartips should be regularly inspected
for deterioration, cracking, or other damage. The eartips can
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