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Full Text Searchable PDF User Manual
3M Personal Safety Division
3M Center, Building 235-2NW-70
St. Paul, MN 55144-1000
3M Technical Support
FP3771 rev a
Copyright © 3M 2015. All rights reserved.
3M™ PELTOR™ LiteCom Pro II Headsets are made
in Sweden by 3M Svenska AB, SE-331 02, Värnamo,
3M and PELTOR are trademarks of 3M Company,
St. Paul, MN 55144-1000, USA. Used under license
Please recycle. Printed in Sweden.
PELTOR™ LiteCom Pro II Headset
The Sound Solution
Two-way Radio Headset
Orejera con radio de dos vías
Headset radio bidirectionnel
The Sound Solution
LiteCom Pro II
FRS 1/GMRS 9
FRS 1/GMRS 2
FRS 2/GMRS 10
FRS 2/GMRS 4
FRS 3/GMRS 11
FRS 3/GMRS 6
FRS 4/GMRS 12
FRS 4/GMRS 8
FRS 5/GMRS 13
FRS 5/GMRS 10
FRS 6/GMRS 14
FRS 6/GMRS 12
FRS 7/GMRS 15
FRS 7/GMRS 14
(H) ANSI S3.19-1974 per USA EPA
(I) Radio Channel Frequencies
• Canadian models only have 1-22 channels preprogrammed into the headset
• USA models have all 1-30 channels preprogrammed into the headset
Mean Attenuation [dB]
Standard Deviation [dB]
Mean Attenuation [dB]
Standard Deviation [dB]
Hard hat attachment:
Mean Attenuation [dB]
Standard Deviation [dB]
(J) Continuous Tone Coded Squelch System (CTCSS)
(K) Digital Coded Squelch (DCS)
1. 67 0
15. 110.9 22. 141.3 29. 179.9 26. 233.6
16. 114.8 23. 146.2 30. 186.2 37. 241.8
17. 118.8 24. 151.4 31. 192.8 38. 250.3
18. 123.0 25. 156.7 32. 203.5
12. 100.0 19. 127.3 26. 162.2 33. 210.9
13. 103.5 20. 131.8 27. 167.9 34. 218.1
14. 107.2 21. 136.5 28. 173.8 35. 225.7
3M™ PELTOR™ LiteCom Pro II Headset
EN Programmable Built-in Two-way Communication Headset 1-4
ES Orejera con comunicación de dos vías programable
FR Headset de communication bidirectionnel intégré programmable
Important Safety Information
Please read, understand, and follow all safety information in these instructions prior to using the 3M™ PELTOR™ LiteCom
Pro II Headset. Retain these instructions for future reference.
You have purchased a two way radio that operates using GMRS and Part 90 frequencies for use within the United States.
In the US, the Federal Communications Commission (FCC) requires that you register for a GMRS/Part 90 license, and
requires that anyone operating a device on the General Mobile Radio Service (GMRS) and Part 90 obtain a license prior to
You can contact your 3M™ PELTOR™ authorized dealer or if dealer is not available in your area you can also apply for a
GMRS/Part 90 license online at FCC Universal License System (ULS) web site (http://wireless.fcc.gov/uls/)
WARNING: SPECIAL CONDITIONS FOR INSTRICALLY SAFE USE
The user is responsible for ensuring that the 3M™ PELTOR™ LiteCom Pro II Headset and Accessories are used according to
the applicable regulations in explosive environments.
• Substitution of components will nullify the intrinsically safe design.
• Do not use the headsets or accessories in potentially explosive environments if they appear broken or otherwise damaged.
• Only use the 3M™ PELTOR™ ACK08 Battery, and only use the 3M™ PELTOR Power Supply (FR08) and Charger Cable
(AL2AH) to charge the battery.
• Only change or charge the battery in a nonhazardous location.
RF Exposure Statement:
The headset antenna must be operated to provide a separation distance of at least 4cm from the head and must not be co-
located or operating in conjunction with any other antenna or transmitter.
• If the information and recommendations contained herein are not adhered to, the protection afforded by the headset will be
• Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the enclosed instructions for proper fit.
• Misuse or failure to wear hearing protection at all times when exposed to hazardous noise may result in hearing loss or
• Hearing protectors should be used in conjunction with a hearing conservation program that also includes monitoring,
audiometric testing, training and recordkeeping. Consult an Occupational Health and Safety professional for more
• When worn according to the User Instructions, this hearing protector helps reduce exposure to both continuous noises, such
as industrial noises and noises from vehicles and aircraft, as well as very loud impulse noises, such as gunfire. It is difficult
to predict the required and/or actual hearing protection obtained during exposure to impulse noises. For gunfire, the weapon
type, number of rounds fired, proper selection, fit and use of hearing protection, proper care of hearing protection, and other
variables will impact performance. If your hearing seems dulled or you hear a ringing or buzzing during or after any noise
exposure (including gunfire), or for any other reason you suspect a hearing problem, your hearing may be at risk. To learn
more about hearing protection for impulse noise, visit www.3M.com/hearing.
This device complies with Industry Canada’s license-exempt RSS’s. Operation is subject to the following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
NOTE: The 3M™ PELTOR™ LiteCom Pro II Headset is integrated with a radio transmitter. Radio frequencies
are subject to the rules and regulations of the Federal Communications Commission (FCC) and Industry Canada
(IC), and many radio frequencies require a license from the FCC and/or IC prior to operating the radio transmitter.
The user/operator is responsible for contacting the FCC and/or IC and obtaining any necessary licenses
prior to using the built-in two-way communication radio.
NOTE: The 3M™ PELTOR™ LiteCom Pro II Headset is designed to meet the regulatory requirements in
those jurisdictions in which it is offered. Changes or modifications not expressly approved by 3M Company could
void the user’s authority to operate the equipment.
3M™ PELTOR™ LiteCom Pro II Headset
Congratulations and thank you for choosing the 3M™
PELTOR™ LiteCom Pro II Headset. The LiteCom Pro II
headset is a hearing protector with a built-in, programmable
two-way communication radio, a level dependent function
for environmental listening, and a port to connect external
The models described in this manual are certified as Intrinsically
Safe (IS). For further information and instructions on the use
within IS areas, please refer to the 3M™ PELTOR™ LiteCom
Pro II Headset IS Technical Data Sheet.
(A:1) Headband (Stainless steel, Leather)
(A:2) Headband wire (stainless steel)
(A:3) Guide (POM)
(A:4) Ear cushion (PVC foil and PUR foam)
(A:5) Foam liner (PUR foam)
(A:7) Environmental microphone
(A:8) Dynamic communications microphone
(A:10) External input/output
(A:11) Li-ion battery (rechargeable)
(A:12) On/Off/Mode button
(A:13) [+] button
(A:14) [–] button
(A:15) PTT button
(A:16) Cup supporting arm (stainless steel)
(A:17) Neckband wire (stainless steel) (A:18) Neckband cover
2. FITTING AND ADJUSTMENT
The noise reduction may be lower when eyeglasses, goggles
or respirator straps are worn between the sealing surface of the
earmuff cushions and the sides of the wearer’s head. For best
noise reduction, select eyeglasses or goggles that have thin,
flat temples or straps which will minimize interference with the
seal of the earmuff cushions. Pull long hair back to the extent
possible and remove other items that may degrade the earmuff
seal such as pencils, hats, jewelry or earbuds.
Do not bend and reshape the headband as this will cause a
loose fit and allow sound leakage.
2:1 Headband model (Fig. B)
(B:1) Expand the headband
(B:2) Slide out the cups and make sure that the cable is on the
outside of the headband.
(B:3) Place headset on top of your head and adjust the height
of the cups by sliding them up or down while holding the
headband in place. Each earmuff should be positioned so it
surrounds the ear entirely.
(B:4) The headband should be positioned across the top of
2:2 Hard hat attachment model (Fig. C)
(C:1) Insert the hard hat attachment in the slot on the hard hat
and snap it into place (C:2).
(C:3) Make sure that the cable is on the outside of the
(C:4) Usage position: Press the headband wires inwards
until you hear a click on both sides. Each cushion should be
positioned so it surrounds the ear entirely. Make sure that the
cups and the headband wires do not press on the edge of the
hard hat as this can cause noise leakage.
(C:5) Stand by position: Snap earmuffs out to allow ventilation.
(C:6) Avoid placing the cups against the hard hat as it will stress
on the hard hat attachment and prevent the earmuffs from
drying. When the hard hat is not in use, place the cups in work
Note: In Canada, users of hard hats combined with earmuffs
must refer to CSA Standard Z94.1 on industrial protective
2:3 Neckband (Fig. D)
(D:1) Place the cups in position over the ears.
(D:2) Keep the headset in position and place the head strap on
top of your head and lock it tight in position.
(D:3) The head strap should be positioned across the top of your
2:4 Microphone (Fig. E)
(E:1 & E:2) To maintain optimal audio quality and noise
cancelling performance, the communications microphone
should be positioned very close to your mouth (3mm or 1/8in).
2:5 Replacing the hard hat attachment plate (Fig. F)
The P3K hard hat attachment is included and fits a wide
selection of hard hats. If the P3K attachment does not fit on
your hard hat, contact 3M Technical Support or an authorized
dealer for alternative attachment plates. To remove the
(F:1) Use a screwdriver to remove the screw holding the plate.
(F:2) Insert the new plate and tighten the screw.
3:1 Inserting and removing the battery
Insert the rechargeable battery in the battery compartment and
push down the clamp to lock it into place. The battery level is
indicated by a voice message in the headset upon startup. A
“low battery” message indicates only a few minutes of battery
life remains and the unit will automatically switch off. To remove
the battery, make sure the unit is powered off. Push the clamp
upwards to unlock the battery.
3:2 Recharging the battery
Make sure the unit is switched off. The battery can be charged
on the headset or it can be removed and charged separately.
are five levels plus it can be turned off. As the squelch level
is increased, there will be greater suppression of static noise,
but consequently the range of communication will be reduced.
Conversely, a lower squelch level provides less static noise
reduction but will increase the range of communication. To
switch this function off, push the – button for two seconds. Push
the + button to switch this function back on.
3:4.6 Sub-channel (Canada only)
Sub-channels (selective squelch) use unique inaudible tones
that serve as a passkey, thus limiting what you hear to radios
with the same sub-channel setting. The advantage of sub-
channels is that they can be used to set up multiple private
groups within a single channel. However, it’s important to note
that only one person can transmit on a single channel at any
given time. Therefore, if anybody is transmitting on the channel,
all sub-channels will be blocked during that time. BCLO (Busy
Channel Lock Out) will prevent transmission on a busy channel.
Push the + or the – button to turn the sub-channel on or off.
This product supports Continuous Tone Coded Squelch System
(CTCSS) and Digital Coded System (DCS).
The built-in two-way radio has three output power levels: High,
Medium and Low. A higher output power level increases the
range of radio communication but will consequently decrease
the battery life. Use the + or the– buttons to select the output
power level. A voice message confirms the new setting.
Choose your prefered language by pushing + or -.
3:5 PTT (Push-To-Talk)
The PTT button is used to manually control the two-way radio
transmission. Push the PTT button when you intend to transmit.
4:1 Replacing the ear cushions (Fig. G)
(G:1) Slide your fingers under the edge of the ear cushion and
pull straight out.
(G:2) Insert the new foam and ear cushion
(G:3). Fit one side of the new ear cushion into the groove of
the earcup and then press on the opposite side until it snaps
It is a best practice to remove the ear cushions (see 4:1) if you
have been wearing the earmuffs for a long time or if moisture
has gathered inside the cups. Clean and disinfect the cups,
headband and ear cushions regularly with soap and warm
water. Allow the headphones to dry completely before using
them again. With heavy use, it is recommended that the ear
cushions are replaced at least twice a year.
NOTE: Do not immerse the hearing protector in water.
4:3 Use and storage conditions
Use Conditions: Do not use the hearing protector at
temperatures below -4°F (-20°C) or above 122°F (50°C).
3.3 Switching the headset on and off
Push and hold the On/Off/Mode button (A:12) for two seconds
to switch the headset on or off. A voice message will confirm
that the unit has been switched on or off. The On/Off/Model
button will flash when the unit is powered on. The current
settings are saved when the headset is switched off. The
automatic power-off time of two hours (factory default) but can
be configured by a 3M Service Technician or an authorized
dealer. Automatic power-off is indicated by a voice message,
“automatic power off” followed by a series of short tones for 10
seconds, then the unit will power off. The automatic power off
can be aborted by pushing a button or by using VOX.
Briefly push the On/Off/Mode button (A:12) to browse through
the following menu options:
3:4.1 Surround volume
Push the + or the – button to adjust the environmental sound
volume. There are five volume levels, with level five allowing
a maximum of 82 dB(A). To switch this function off, push the –
button for two seconds. Push the + button to switch the function
back on again.
3:4.2 Radio volume
Push the + or the – button to adjust the two-way radio sound
level. There are five volume levels. To switch this function off,
push the – button for two seconds. Push the + button to switch
this function back on again.
NOTE: When the volume is switched off, no radio
communication can be heard and all the radio configurations
menus are hidden.
Push the + or the – button to change the radio channel.
VOX, or voice operated transmission, is a hands-free feature
that enables radio transmission without having to push a PTT
button. The VOX feature will open the radio channel upon
vocalization and close the radio channel when no speech is
detected (the speech microphone must be placed close to
your mouth (D:2)). There are five VOX levels plus it can be
turned off. Push the + or the – button to adjust the VOX level.
The VOX level defines the acoustic threshold that activates
the radio transmission. Use the lower VOX levels for quieter
environments and higher VOX levels for louder environments.
To switch the VOX function off, push the – button for two
seconds or push the PTT button twice. Push the + button to
switch the VOX function back on. The radio has a BCLO (Busy
Channel Lock Out) function that prevents VOX operation if the
channel is being used for another transmission. A tone indicates
that the channel is currently being used.
Squelch is a function that reduces the hiss or static noise
that may be heard during the two-way radio communication.
Push the + or the – button to adjust the squelch level. There
Storage Conditions: Remove the batteries before storing the
product. Do not store the hearing protector at temperatures
below -4°F (-20°C) or above 131°F (55°C), for example on a
car dashboard, parcel shelf or window sill.
Much of the internal programming and default settings of the
LiteCom Pro II headset can be adjusted. Contact a 3M Service
Technician or an authorized dealer.
5. TECHNICAL DATA
5:1 Supporting Information required by the U.S.A. EPA:
Title 40 CFR Part 211 (Table H)
H1. Test frequencies
H2. Mean attenuation
H3. Standard deviation
The level of noise entering a person’s ear, when hearing
protector is worn as directed, is closely approximated by the
difference between the A-weighted environmental noise level
and the NRR. Example:
1. The environmental noise level as measured at the ear is 92
2. The NRR is 25 decibels (dB).
3. The level of noise entering the ear is approximately equal to
• For noise environments dominated by frequencies below 500
Hz the C weighted environmental noise level should be used.
• 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
(wording required by EPA).
NOTE: 3M recommends fit testing of hearing protectors. If
NRR is used to estimate typical workplace protection, 3M
recommends that NRR be reduced by 50% or in accordance
with applicable regulations.
6. ACCESSORIES AND SPARE PARTS
3M™ PELTOR™ HY79 Hygiene Kit
Hygiene kit consisting of two foam pads, two foam rings and
snap- in ear cushions.
3M™ PELTOR™ HY100A Clean – Single-Use Protectors
Single-use protector for the ear cushions. Package of 100 pairs.
3M™ PELTOR™ HYM1000 Mike Protector
Moisture and wind-tight tape. Protects the speech microphone.
Package of 16.4 feet for about 50 replacements.
3M™ PELTOR™ M995 Wind Shield
Wind noise protector for MT53-type speech microphones. One
3M™ PELTOR™ M40/1 Wind Shield for MT7-type speech
Wind noise protector for MT7-type speech microphones. One
3M™ PELTOR™ M60/2 Wind Shield for ambient
microphones Wind noise protector for ambient sound
microphones. One pair per package.
3M™ PELTOR™ FL5602-50 External PTT Adapter
Intrinsically Safe Push-To-Talk button with connection cable.
3M™ PELTOR™ ACK08 Battery
Intrinsically safe Li-Ion battery.
WARNING: The following accessories MUST NOT be
connected or disconnected in a potentially explosive
3M™ PELTOR™ MT53N-12 Electret Microphone
Microphone boom with electret differential microphone.
3M™ PELTOR™ MT7N-02 Dynamic Microphone
Microphone boom with dynamic differential microphone.
3M™ PELTOR™ MT90-02 Throat Microphone Dynamic
NOTE: Use of any other type of microphone other than
the original model requires re-programming of the LiteCom
headset. Contact the 3M Service Technician or an authorized
dealer for more information.
WARNING: The following accessories MUST NOT be used
in a potentially explosive environment.
3M™ PELTOR™ FR08 Power Supply
Power supply for the PELTOR ACK08-50 battery.
3M™ PELTOR™ AL2AH Battery Charge Cable
Cable for use when charging battery ACK08-50.
3M™ PELTOR™ FL6CS Connecting Cable
2.5 mm stereo connector, listen only.
3M™ PELTOR™ FL6CT Connecting Cable
3.5 mm stereo connector, listen only.
3M™ PELTOR™ FL6BT Connecting Cable
3.5 mm mono connector for use with a communication radio.
3M™ PELTOR™ FL6BR Connecting Cable
PELTOR J11 connector (type Nexus TP-120) for use with a
PELTOR adapter and an external communication radio.
7. WARRANTY AND LIMITATION OF LIABILITY
NOTE: The following statements do not apply in Australia and
New Zealand. Consumers should rely on their statutory rights.
WARRANTY: In the event any 3M Personal Safety Division
product is found to be defective in material, workmanship, or not
in conformity with any express warranty for a specific purpose,
3M’s only obligation and your exclusive remedy shall be at 3M’s
option, to repair, replace or refund the purchase price of such
parts or products upon timely notification of the issue by you
and substantiation that the product has been stored, maintained
and used in accordance with 3M’s written instructions. EXCEPT
WHERE PROHIBITED BY LAW, THIS WARRANTY IS
EXCLUSIVE AND IS IN LIEU OF ANY EXPRESS OR
IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE OR OTHER WARRANTY
OF QUALITY, OR THOSE ARISING FROM A COURSE OF
DEALING, CUSTOM OR USAGE OF TRADE, EXCEPT OF
TITLE AND AGAINST PATENT INFRINGEMENT. 3M has no
obligation under this warranty with respect to any product that
has failed due to inadequate or improper storage, handling, or
maintenance; failure to follow product instructions; or alteration
or damage to the product caused by accident, neglect, or
LIMITATION OF LIABILITY: EXCEPT WHERE PROHIBITED
BY LAW, IN NO EVENT SHALL 3M BE LIABLE FOR
ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL LOSS OR DAMAGES (INCLUDING LOST
PROFITS) ARISING FROM THIS PRODUCT, REGARDLESS
OF THE LEGAL THEORY ASSERTED. THE REMEDIES SET
FORTH HEREIN ARE EXCLUSIVE.
3M does not accept liability of any kind, be it direct or
consequential (including, but not limited to, loss of profits,
business and/or goodwill) arising from reliance upon any
information herein provided by 3M. The user is responsible
for determining the suitability of the products for their intended
use. Nothing in this statement will be deemed to exclude or
restrict 3M’s liability for death or personal injury arising from its
NOTICE: This radio is intended for use in occupational/controlled conditions,
where users have full knowledge of their exposure and can exercise control over
their exposure to meet FCC limits. This radio device is NOT authorized for
general population, consumer, or any other use.
This 2-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to
provide communications between two or more users over a distance. It uses radio
frequency (RF) energy or radio waves to send and receive calls. RF energy is one form
of electromagnetic energy. Other forms include, but are not limited to, electric power,
sunlight and x-rays. RF energy, however, should not be confused with these other forms
of electromagnetic energy, which when used improperly can cause biological damage.
Very high levels of x-rays, for example, can damage tissues and genetic material.
Any Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation
of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux
appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions
suivantes : (1) l'appareil ne
doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout
brouillage radioélectrique subi, même si le brouillage est susceptible d'en
compromettre le fonctionnement
The device been tested is compliance with RF field strength limits, users can obtain Canadian
information on RF exposure and compliance.The minimum distance from body to use the device is 4cm.
Le présent appareil est conforme
Après examen de ce matériel aux conformité ou aux limites d’intensité de champ RF,
les utilisateurs peuvent sur l’exposition aux radiofréquences et la conformité and compliance d’acquérir
les informations correspondantes.
La distance minimale du corps à utiliser le dispositif est de 4cm.