ISOtunes IT-48 Bluetooth Earmuff Instruction Manual
- June 9, 2024
- ISOtunes
Table of Contents
ISOtunes IT-48 Bluetooth Earmuff
Location of Controls
- Next Track
- Previous Track
- Volume Up
- Volume Down
- Multi-Function Button (MFB)
- Bluetooth Microphone
- Micro-USB Charging Port
- Charge Indicator
- Battery Cover Latch
- Boom Microphone Port
Power On/Off
Power On: Press and hold the MFB (5) for 3 seconds (you will hear “Power
On”)
Power Off: Press and hold the MFB (5) for 3 seconds (you will hear “Power
Off”)
Bluetooth Pairing
Press and hold the Multifunction Button (5) to power on the headphones and
Pairing Mode is automatically entered. You will hear “Power On” then
“Bluetooth Pairing Mode” and the headphones will automatically enter Pairing
Mode.
Dual Connect Mode
This product can connect to two devices at the same time such as your phone
and your computer.
- Pair and Connect to your first device as described in “Pairing”. This will be device A.
- Press and Hold the MFB (5) for 7 Seconds until you hear “Bluetooth Pairing Mode” (you will hear Power Off, keep holding the button until you hear “Bluetooth Pairing Mode”)
- Pair and Connect to the 2nd device as described in “Pairing”. This will be device B.
- On Device A, go to the bluetooth menu and manually connect to ISOtunes LINK 2.0.
- Both devices are now connected.
Pairing Reset
If you have issues connecting to any device, we recommend a Pairing Reset:
Make sure you forget or unpair the headphones from your device prior to doing
a pairing reset. With the headphones powered on, press and Hold the Volume Up
Button (3) and the Volume Down Button (4) for four seconds. The product will
enter pairing mode.
Music & Volume
- Play/Pause: Short Single Press MFB (5)
- Next Track: Short Single Press MFB (1)
- Previous Track: Short Single Press MFB (2)
- Volume Up: Press + button (3)
- Volume Down: Press – button (4)
Siri/ Google Assistant
Press and Hold MFB for 1 Second (5)
Phone Calls
- Answer Call : Short Press MFB (5)
- End Call: Short Press MFB (5)
- Reject Call: Press and hold MFB (5)
Recharging Lithium-Ion Battery
The Lithium Battery Pack comes fully installed. Please make sure the Battery
Pack Cable is plugged in to the Battery Pack Port. The Lithium Battery Pack
holds a 50 hour charge.
Recharging Lithium-Ion Battery
Optional AAA Battery Power Source
The headset can also be powered by three AAA Batteries (not included). Three
AAA Batteries hold a 24+ hour charge and will need to be replaced.
Boom Mic
To enhance phone call quality, consider using the Boom Microphone (sold separately). Open the microphone port cover on the right earcup by pulling down on the exposed tab, then align the base and the 3.5mm jack of the Boom Microphone and insert, pressing firmly to ensure that it’s fully seated. Remove the Boom Microphone for storage or when not in use
LEGALITIES
Fitting
Models
IT-48 LINK 2.0
IT-49 LINK 2.0 EN 352
Important
Please read, understand, and follow all safety information.
Fitting
- Remove the white foam inserts from each earcup
- Pull the earcups apart
- Place the product on your head
- Adjust the earcup position by extending the headband to ensure a good fit around the ears.
Introduction
Thank you for purchasing ISOtunes® LINK 2.0 Professional Noise Isolating
Earmuffs. These earmuffs have been specifically designed for use in noisy
environments – allowing you to block
out much of the surrounding noise so that you can listen to your music or talk
on the phone with less interruption. This product has been tested and meets
the European Safety Standard EN 352- 1:2002, EN 352-6:2002, EN 352-8:2008, RED
directive 2014/53/EU, harmonized standard EN 60065-2014+A11-2017, EN
62479:2020, ETSI EN 300 328 V2.1.1, ETSI EN 301 489-1 V2.1.1,ETSI EN 301
489-17 V3.1.1and the ANSI standards for a hearing protector, with a Single
Number Rating (SNR) of 30 dB with a Noise Reduction Rating (NRR) of 25 dB.
Full testing details are available in the Noise Attenuation section of this
booklet.
Noise Attenuation
APPROVAL: ISOtunes® LINK 2.0 is tested and approved in accordance with ANSI
S3.19-1974 Specifications and the European Safety Standard EN 352-1:2002, EN
352-6:2002, and EN 352-8:2008.
ANSI S3.19-1974
The level of noise entering a person’s ear, when ISOtunes® LINK 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:
- The surrounding noise level measured at the ear is 100 dB.
- The NRR of ISOtunes® LINK 2.0 is 25 dB.
- 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 352-1:2002, EN 352-6:2002, and EN 352- 8:2008.
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. The lithium battery pack can be removed from the product and
replaced. Lift the battery out. Unplug the battery pack cable. To reinstall,
put the battery pack into the compartment and plug in the Battery pack cable
into the battery pack port. Ensure the battery pack cable is plugged into the
battery pack cable port for proper product performance. Alternatively, three
AAA batteries can power the device. Completely remove the Lithium Battery Pack
from the product and install the AAA batteries as indicated on the product. Do
not attempt to use the Lithium Battery Pack and AAA batteries at the same
time.
WARNINGS: Performance may deteriorate with battery use. The typical
period of continuous use that can be expected from ear-muff battery is 50
hours. ISOtunes® LINK 2.0 does an excellent job of blocking outside noise. As
such, ISOtunes® LINK 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® LINK 2.0 is used ONLY in safe
environments.
This earmuffs are intended to protect your ears against hazard noise. The output of the electrical audio circuit of this hearing protector may exceed the daily limit sound level. The audibility of warning signals at a specific workplace may be impaired while using the entertainment facility. This product may be adversely affected by certain chemical substances. Further information may be sought from the manufacturer. The fitting of hygiene covers to the cushions may affect the acoustic performance of the ear-muffs.
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.
The wearer should ensure that:
- The hearing protector is fitted, adjusted, and maintained in accordance with the manufacturer’s instructions.
- The hearing protector is worn at all times in noisy surroundings.
- The hearing protector is regularly inspected for serviceability.
If these recommendations are not adhered to, the protection afforded by the hearing protector will be severely impaired. The size range for the earmuff is S M L. The mean mass of the product is 448g. Date of Obsolescence: 3 years from purchase date. Not to be used in Explosive Atmospheres.
Additional Notes
ISOtunes® LINK 2.0 is compliant with Bluetooth® V4.2. We do not guarantee
compatibility of all functions on every Bluetooth®- enabled device. Please
check your device’s user manual for compatibility and functionality. Please
note, the hearing protector provides an electrical audio facility. The ear-
muff provides audio signal sound pressure level limitation which limits the
entertainment audio signal to 82 dB(A) effective to the ear. This limit is
maintained for bluetooth signal inputs which are standard to the Bluetooth
A2DP, HFP, and HSP specifications. There is no analog line input on this
product. This earmuff is provided with electrical audio input. The wearer
should check correct operation before use. If distortion or failure is
detected, the wearer should refer to the manufacturer’s advice.
For additional information about ISOtunes LINK 2.0, please visit www.ISOtunes.com/LINK 2.0-Manual. For additional information or questions about ISOtunes® products or spares and accessories, please contact our support team.
Replacement Parts: Hygiene Kit (ear-cushions and foam inserts)
Model Number: IT-88
Replace ear cushions
- Put your finger between the ear cushions and foam.
- Pull the Foam Ear cushion away from the earcup.
- Remove the foam inserts in the earcup.
- Install the new foam inserts
- Snap the new ear-cushion in place on the earcup
The following information shall be available from the manufacturer on request:
a) results of tests performed in accordance with this standard;
b) the name and country of the test laboratory which performed the tests
specified and the date of the tests.
FCC
Caution : The user is cautioned that changes or modifications not
expressly approved by the party responsible for compliance could void the
users’ authority to operate the equipment.
Note : This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC‘s RF radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
UK & Europe
uk-eurosupport@isotunesaudio.com
North America
support@isotunesaudio.com
1-844-396-3737
Monday-Friday 9-5 ET
EU Importeur
Haven Technologies UK LTD
Winterhuder Weg 29
22075 Hamburg
Germany.
References
- ISOtunes LINK 2.0 Bluetooth Earmuff
- ISOtunes Product Manuals | Download User Manuals
- ISOtunes® | Bluetooth Hearing Protection | Wireless Ear Defenders
- ISOtunes Product Manuals | Download User Manuals – ISOtunes®
- ISOtunes LINK 2.0 Bluetooth Earmuff
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