Listen ListenTALK LA-403 User manual

www.listentech.com
USER MANUAL
Mobile Two-Way
Communication
System
ENGLISH
ListenTALK
www.tourguidesystem.co.uk

2
ListenTALK USER MANUAL
Dear Valued Customer,
Thank you for choosing Listen! We are dedicated to providing you with
the highest quality products available, and take pride in delivering
outstanding performance to ensure you are completely satised.
We independently certify each of our products to the highest quality
standards and back them with a limited lifetime guarantee. We are
available to answer any questions you might have during installation or
in the operation of our products. At Listen, it’s all about you, should you
have any comments or suggestions we’re here to listen.
Here’s how to reach us:
+1.801.233.8992 +1.800.330.0891 North America
+1.801.233.8995 fax [email protected] www.listentech.com
Thank you and enjoy your listening experience!
Best regards,
Russell Gentner and the Listen Team
ListenTALK USER MANUAL

3
4 Introduction
5Important Information
6 Important Safety Instructions
7 ListenTALK Components
8 ListenTALK Denitions
9 LK-1 Quick Reference
11 LK-11 Quick Reference
13 LK-12 Quick Reference
15 Docking Station Tray Quick Reference
17 Specications
23 System Setup
25 Unit – General Operation
26 System Talkback Modes
27 ListenTALK Security
27 Unit Programming
30 Docking Station Operation
31 Advanced Features
31 Software Suite
31 Accessories
32 Applications
36 System Troubleshooting
37 Compliance Information
35 Warranty
39 Contact Information
LISTENTALK TABLE OF CONTENTS

4
ListenTALK USER MANUAL
INTRODUCTION
ListenTALK (LK-1, LKR-11, LKR12) and their accessories have been designed as a mobile
or stationary, one or two-way, wireless collaboration system designed for group
communications in a variety of applications. This includes applications such as Training
and Collaboration, Assistive Listening, Guided Tour Groups, Language Interpretation and
Translation, Event Production and Intercom. This product can be used for residential or
commercial purposes.
SIMPLE AND VERSATILE
ListenTALK systems are simple to purchase and congure and they are highly versatile.
Create a ListenTALK Group with the push of a button in the Docking Station, with the click of a
mouse in the ListenTALK Software Suite or on the go using built-in Near Field Communication
(NFC) technology. Use up to twenty simultaneous groups in the same area for North America
(A0) and Japan (J0) versions and up to thirty groups in the same area for the Europe (E0)
version.
ListenTALK Transceivers are simple to operate and leaders can easily designate one of three
Participant modes to meet the needs of any venue or application.
RELIABLE AND SECURE
Instead of the overcrowded 2.4 GHz frequency, ListenTALK operates on the 1.9 GHz band
in full duplex and utilizes frequency hopping and spread spectrum technology to increase
reliability and reduce interference. Headset styles are available for use in quiet or noisy
environments, or simply use your own.
Listen understands that your security matters, so each ListenTALK is equipped with a
multilayer security protocol consisting of a 40-bit (pin free) group subscription, 32-bit
authentication and a 64-bit encryption scheme assuring secure conversations.
WELCOME TO LISTENTALK!
ListenTALK is Simple, Versatile, Scalable, Secure and Reliable!

5
IMPORTANT INFORMATION
Read the following Information before you use your ListenTALK system.
Product labeling information such as serial number, manufacturer, and additional regulatory information
is found in the battery compartment of this device. To view, press in battery compartment access tab and
slide battery door down and o and then remove battery. This information may also be viewed via the
display when the About menu item is accessed.
This device has been evaluated and found in compliance with RF exposure limits set forth for body worn
portable devices in an uncontrolled environment and may be safely worn and operated handheld or next
to your body such as on a lanyard or clipped to clothing.
Recycling
Help Listen Technologies protect the environment! Please take the time to dispose of your
equipment properly.
Product Recycling Instructions
Please do NOT dispose of your Listen Technologies equipment in the household
trash. Please take the equipment to an electronics recycling center; OR, return the
product to the factory for proper disposal.
Battery Recycling Instructions
Please do NOT dispose of batteries in the household trash. Please take the
batteries to a retail or community collection point for recycling.

6
ListenTALK USER MANUAL
IMPORTANT SAFETY INSTRUCTIONS
Read the following information before you use your ListenTALK system.
Caution
!
1. Read these safety instructions and the instruction manual of the product.
2. Keep these safety instructions and the instruction manual of the product.
Always include all instructions when passing the product on to third parties.
3. Heed all warnings.
4. Follow all instructions.
5. Do not expose to direct sunlight for long periods of time.
6. Do not store near any heat sources such as radiators, heat registers, stoves, or other apparatus that
produce heat.
7. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been
damaged in any way, when the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
Caution
!
Hearing Safety
This product is designed to amplify audio to a high volume level which could potentially cause hearing
damage if used improperly. To protect your hearing make sure the volume is turned down before putting
on the headset. Then adjust the volume up to the minimum setting required to hear clearly. Do not allow
children or other unauthorized individuals to have access to this product without supervision.
Caution
!
Medical Device Safety
Before using this Listen product with an implantable or other medical device, consult your physician
or manufacturer of your implantable or other medical device. Always make sure you are using this
product in accordance with the safety guidelines established by your physician or the implantable
device manufacturer.
Warning
!
Safety Instructions for Lithium-ion Battery
This product uses a Lithium-Ion battery 3.7V,1200 mAh. Use only the battery that come with your device
or replacement NP-60 batteries designed for use in this device.
Do not dismantle, open or shred secondary cells or battery.
Do not expose cells or battery to heat or re. Avoid storage in direct sunlight.
Do not use any charger other than that specically provided for use with the equipment.
Defective or exhausted battery should never be disposed of as municipal waste. Return old batteries
to the battery supplier, a licensed battery dealer or a designated collection facility. Do not incinerate
batteries.
Do not replace the batteries in potentially explosive environments, such as rooms where ammable
liquids or gasses are present.
Lithium batteries have limited lifetimes. Any Lithium battery that shows any signs of damage, include
swelling, should be properly discarded immediately.

7
LISTENTALK COMPONENTS
LK-1 ListenTALK Transceiver
The term LK-1 ListenTALK Transceiver refers to a ListenTALK hand-held unit that
can both transmit audio to and receive audio from a ListenTALK group. The LK-1
Transceiver can be used as a group leader, Sub-leader or Participant unit.
LKR-11 ListenTALK Receiver Pro
The term LKR-11 ListenTALK Receiver Pro refers to a ListenTALK hand-held unit that is
used as a participant unit that can only receive audio from a ListenTALK group.
The LKR-11 is a full featured listen only unit.
LKR-12 ListenTALK Receiver Basic
The term LKR-12 Listen TALK Receiver Basic refers to a ListenTALK hand-held unit that
is used as a participant unit that can only receive audio from a ListenTALK group.
The LKR-12 is a limited featured listen only unit.
Docking Station Tray 16
The optional ListenTALK Docking Station 16 serves as convenient storage, programming
and charging station for ListenTALK Transceivers. The Docking Station makes it easy to
create a ListenTALK Group and perform other tasks.
Accessories
ListenTALK accessories include an Intelligent Cable Management Unit for the Docking
Station 16 Tray, the Docking Station Case 16, several headsets, headphones, ear
speakers, protective case, and alkaline battery compartment. Note that ListenTALK
Transceivers may also be used with standard smartphone headsets.
ListenTALK Software Suite
Available for Windows PCs, the ListenTALK Software Suite makes it easy to pair
ListenTALKs, form ListenTALK Groups, check ListenTALK status, and includes many
advanced programming features. (see page 31)
ListenTALK
The term ListenTALK refers to the system as a whole and a system is made up of dierent
ListenTALK components.

8
ListenTALK USER MANUAL
LISTENTALK DEFINITIONS
ListenTALK Group
A ListenTALK Group is two or more ListenTALK units which have been Paired.
Pairing
Pairing is the process whereby ListenTALK units become a group. ListenTALK units may be paired by NFC
(Near-Field Communications), with a Docking Station or with the ListenTALK Software Suite.
Leader, Sub-leader and Participant
A Group consists of one leader, one or more Sub-leaders (optional) and one or more Participants.
In a museum tour, the museum guide would be the leader, an assistant guide would be the Sub-leader
and the museum guests would be Participants.
ListenTALK Security
Conversations within a ListenTALK Group are encrypted by a unique Pair Key which separates Groups
from one another and ensures secure conversations within each Group. The Pair Key is generated by the
Group’s leader and shared with each Sub-leader and Participant (see Page 27).

9
LK-1 LISTENTALK TRANSCEIVER QUICK REFERENCE
Internal Microphone
Internal microphone may be used by a Participant. For best results, a leader should use an external
microphone-equipped headset. Visit www.listentech.com/assistive-listening/listentalk/
to choose from a wide range of headsets and other accessories.
Graphic Display
Displays context-sensitive information such as Group Name/Number, Charging Status,
Battery Life, Prole Mode, Soft Button Menus, and Volume Level.
Soft Buttons
Leader: Left Soft Button scrolls through System Talkback Modes (O Mode, Leader Mode or Group
Mode – See Page 26. Right Soft Button initiates pairing. Both buttons operate for Transceiver
programming (see Page 28).
Participant: Soft Buttons are disabled except during Transceiver programming (see Page 28).
Talk Button & Menu Exit
Leader: Press Talk Button to toggle between Talk and Mute.
Participant: Press and hold Talk Button to talk; release to mute.
Light Sensor
Automatically brightens or dims the Graphic Display based on ambient light conditions.
Removable Belt/Lanyard Clip
To use the Lanyard, snap its metal ring into and up in the slot at the top of the Belt Clip. Then, adjust
the Lanyard to a comfortable length and slip it over the user’s head. Alternately, simply slip the Belt
Clip over a user’s belt.
Rechargeable Battery
Charge ListenTALKs rechargeable battery in the Docking Station or connect a USB charger to the Micro
USB port. Alternatively, alkaline batteries (not rechargeable) may be used by installing the optional
Alkaline Battery Compartment and three AAA size alkaline batteries.
Battery Compartment Access
The battery compartment may be accessed by depressing the access button on the back of the unit
and while pressing, slide the battery door down and o. To reattach the battery door, align tabs on
top while pressing the battery door in and up until it latches in place.
Neareld Antenna
Allows a leader to Pair with Sub-leaders or Participants to form a Group as described on Page 24.
1
2
3
4
5
6
7
8
9
Light Sensor
Microphone
Graphic Display
Soft Buttons
Talk Button &
Menu Exit
Removable
Belt/Lanyard Clip
Rechargeable Battery
(or Alkaline)
Neareld Antenna
(Under Door)
Battery Compartment
Access (Press tab in and
slide back down)
1
4
5
9
8
6
7
3
2

10
ListenTALK USER MANUAL
LK-1 LISTENTALK TRANSCEIVER QUICK REFERENCE
Micro USB
Connect Micro USB to a standard USB charger to charge the ListenTALK. Connect to a Windows
computer to program the ListenTALK using the ListenTALK Software Suite.
Volume Control & Menu Navigation
Operation: Controls Headset volume.
Programming: Navigates menus shown in the Graphic Display.
3.5mm Headset/Microphone Port
Use a headset such as those available at www.listentech.com/assistive-listening/listentalk/transceiver-
headsets/. Note that ListenTALK Transceivers also accept standard smartphone headsets/earbuds.
Leader Clip
Snap a Leader Clip onto a Transceiver to create a Leader or Sub-leader. Omit from Participant
Transceiver.
Status LED
Status LED will ash during charging and turn solid when ListenTALK is fully charged.
Leader or sub-leader Status LED turns red to indicate Mute after pressing Talk Button.
Power Button & Status Screen
Press and hold for one second to power on the ListenTALK and display the Status Screen. Press and
hold for three seconds to power o. Press momentarily to display the Status Screen during use.
Charger Contacts
Allow ListenTALKs to charge automatically when placed in the Docking Station. Also allow
communication with a Windows computer equipped with the ListenTALK Software Suite.
10
11
12
13
14
15
16
Volume Control &
Menu Navigation
Micro USB (for
Battery Charging
& Conguration)
11
10
14
Bottom: Charger
Contacts
(for Docking Station)
3.5mm Headset/
Microphone Port Leader Clip
Status LED
15 Power Button
& Menu Enter
13
12
16

11
LKR-11 LISTENTALK RECEIVER PRO QUICK REFERENCE
Graphic Display
Displays context-sensitive information such as Group Name/Number, Charging Status,
Battery Life, Soft Button Menus, and Volume Level.
Soft Buttons
Participant: Soft Buttons are disabled except during Transceiver programming (see Page 28).
Light Sensor
Automatically brightens or dims the Graphic Display based on ambient light conditions.
Removable Belt/Lanyard Clip
To use the Lanyard, snap its metal ring into and up in the slot at the top of the Belt Clip.
Then, adjust the Lanyard to a comfortable length and slip it over the user’s head.
Alternately, simply slip the Belt Clip over a user’s belt.
Rechargeable Battery
Charge ListenTALKs in Docking Station or connect a USB charger to the Micro USB port.
Access the battery compartment by depressing the button on the battery door. Alkaline batteries
(not rechargeable) may be used by installing the optional Alkaline Battery Compartment and
three AAA size alkaline batteries.
Battery Compartment Access
The battery compartment may be accessed by depressing the access button on the back of the
unit and while pressing, slide the battery door down and o. To reattach the battery door, align
tabs on top while pressing the battery door in and up until it latches in place.
Neareld Antenna
Allows a Leader to Pair with Sub-leaders or Participants to form a Group as described on Page 24.
1
2
3
4
5
6
7
Light Sensor
Graphic Display
Soft Buttons
Removable
Belt/Lanyard Clip
Rechargeable Battery
(or Alkaline)
Neareld Antenna
(Under Door)
3
7
4
5
2
1
Battery Compartment
Access (Press tab in and
slide back down)
6

12
ListenTALK USER MANUAL
LKR-11 LISTENTALK RECEIVER PRO QUICK REFERENCE
Micro USB
Connect Micro USB to a standard USB charger to charge the ListenTALK. Connect to a Windows
computer to program the ListenTALK using the ListenTALK Software Suite.
Volume Control & Menu Navigation
Operation: Controls Headset volume.
Programming: Navigates menus shown in the Graphic Display.
3.5mm Headphone Output
Use a ear speaker/headphone such as those available at
https://www.listentech.com/assistive-listening/listentalk/earphones-neckloop-lanyards/
Status LED
Status LED will ash during charging and turn solid when ListenTALK is fully charged.
Power Button & Status Screen
Press and hold for one second to power on the ListenTALK and display the Status Screen. Press and
hold for three seconds to power o. Press momentarily to display the Status Screen during use.
Charger Contacts
ListenTALK units charge automatically when placed in the Docking Station. Also allows
communication with a Windows computer equipped with the ListenTALK Software Suite.
8
9
10
11
12
13
Volume Control &
Menu Navigation
Micro USB (for
Battery Charging
& Conguration)
9
8
11
Bottom: Charger
Contacts
(for Docking
Station)
3.5mm
Headphone
Output
Status LED
12 Power Button
& Menu Enter
10
13

13
LKR-12 LISTENTALK RECEIVER BASIC QUICK REFERENCE
Removable Belt/Lanyard Clip
To use the Lanyard, snap its metal ring into and up in the slot at the top of the Belt Clip.
Then, adjust the Lanyard to a comfortable length and slip it over the user’s head.
Alternately, simply slip the Belt Clip over a user’s belt.
Rechargeable Battery
Charge ListenTALKs in Docking Station or connect a USB charger to the Micro USB port.
Access the battery compartment by depressing the button on the battery door.
Alkaline batteries (not rechargeable) may be used by installing the optional Alkaline
Battery Compartment and three AAA size alkaline batteries.
Battery Compartment Access
The battery compartment may be accessed by depressing the access button on the back of the
unit and while pressing, slide the battery door down and o. To reattach the battery door, align
tabs on top while pressing the battery door in and up until it latches in place.
1
2
3
Removable
Belt/Lanyard Clip
Rechargeable Battery
(or Alkaline)
1
2
Battery Compartment
Access (Press tab in and
slide back down)
3

14
ListenTALK USER MANUAL
LKR-12 LISTENTALK RECEIVER BASIC QUICK REFERENCE CONTINUED
Micro USB
Connect Micro USB to a standard USB charger to charge the ListenTALK. Connect to a Windows
computer to program the ListenTALK using the ListenTALK Software Suite.
Volume Control
Operation: Controls ear speaker/headphone volume.
3.5mm Ear Speaker/Headphone
Use a ear speaker/headphone such as those available at
https://www.listentech.com/assistive-listening/listentalk/earphones-neckloop-lanyards/
Status LED
Status LED will ash the white LED during charging and turn solid when ListenTALK is fully charged.
While unit is on momentarily press power button to activate the LED status. If unit is paired the status
LED will ash green once followed by the white LED Flashing the battery status: 1=1/4, 2=1/2, 3=3/4,
and 4=full.
Note: LKR-12 Green LED will continue ashing if receiver is not paired to a group or the Leader
unit is not turned on.
Power Button
Press and hold for one second to power on the LKR-12. Press and hold for three seconds to power o.
Press momentarily to display the Status LED information during use.
Charger Contacts
Allow ListenTALKs to charge automatically when placed in the Docking Station. Also allow
communication with a Windows computer equipped with the ListenTALK Software Suite.
4
5
6
7
8
9
Volume
Control
Micro USB (for
Battery Charging
& Conguration)
5
4
7
Bottom: Charger
Contacts
(for Docking Station)
3.5 mm
Headphone
Output
Status LED
8Power Button
6
9

15
LISTENTALK DOCKING STATION TRAY QUICK REFERENCE
Pairing Button
Create a ListenTALK Group by inserting LK-1 Transceiver into Leader pocket (red) and other ListenTALK
units into Participant Pockets, and then momentarily pressing the Docking Station Pairing Button.
Note: Momentarily pressing the Docking Station Pairing Button uses the Leader’s existing Pairing Key.
To create a new Pairing Key, press and hold the Pairing Button for ve seconds (also see Page 24).
This will generate a new group and eliminate previously paired ListenTALK units from the group.
Pairing Indicator
Pairing Indicator will ash during pairing, then turn solid momentarily and nally extinguish when the
pairing process is completed successfully. The Pairing and Status Indicators will turn solid together
and then extinguish during New Pair Key generation (see Page 30).
Status Indicator
Status Indicator lights during Status Button activation and during new pair key generation.
Status Button
Press and hold the Status Button to illuminate the ListenTALK Graphic Displays for
Group identication and individual ListenTALK information.
Leader Pocket (Red)
Used for charging, pairing and programming.
Leader Clip Storage
Snap unused Leader Clips onto these storage tabs.
Participant Pockets
Used for charging, pairing and programming.
1
2
3
4
5
6
7
Leader Clip StorageLeader Pocket (Red)
Pairing Button
Pairing Indicator
Status Indicator
Status Button
6
1
5
2
3
4
Participant Pockets
7

16
ListenTALK USER MANUAL
LISTENTALK DOCKING STATION TRAY QUICK REFERENCE
Handles
Handles for holding the Docking Station Tray.
USB Port
Connect to Windows computer to program, pair and manage inventory of ListenTALK
units using the ListenTALK Software Suite.
Power Connector
Connect the Power Supply to this Power Connector and the Power Cord to any standard
AC outlet (100/240 VAC, 50/60 Hz).
Intelligent Cable Management Unit Mounts (LA-382)
The Optional Docking Station Intelligent Cable Management Unit fastens to these holes.
Wall-Mounting Slots
Mount two screws with ¼” heads 6-inches apart on a wall. Slip Docking Station 16
onto screw heads.
8
9
10
11
12
Wall Mounting Slots
8
Handles
Intelligent
Cable
Management
Unit Mounts
(LA-382)
USB Port Power Connector
9 10
11
12

17
LK-1 LISTENTALK TRANSCEIVER SPECIFICATIONS*
Physical
Dimensions (H x W x D) with Belt
Clip 10 x 5.4 x 2.4 cm (3.93 x 2.13 x 0.93 in.)
Weight 79 g (2.79 oz.)
Ship Weight 206 g (7.20 oz.) with 454 g (1.0 lbs.) minimum
Enclosure material PC ABS Plastic
Indicators Display - 64 x 128 OLED, Variable brightness LED – RED/White multifunction
(Mute, Charge Status)
User Controls Volume up, Volume Down, Talk, Power/Status, Talk Modes, Pairing
Programming Via software and USB port on Transceiver or via software and USB port on Docking Station
Connections
Headset – 3.5mm TRRS, CTIA compliant
USB – Micro USB, Control and Charging
Charger- 4 Contact, Control and Charging
Audio
Microphone Input
Compatibility Electret, external bias
Bias 3 volt, 2 mA Current Maximum
Sensitivity requirement -28 to - 50 dBV/Pa
Internal Microphone
Switching Auto detect on jack insertion or Manual
Maximum input level 109 dB SPL
Gain Adjustable, 30 dB range
Purpose Accepts Listen Technologies Headsets or standard smart-phone headsets.
Can be used as a Mic/Line input (See “Mic Select” Menu Choices on Page 26)
Connector
Nominal Input Level for Line
Source -10dBu (0.24 volts)
Speaker load 16 - 32 ohm load
Max output power 67 mW, 16-ohm load, Threshold of Clipping
Sidetone Adjustable
System
Frequency Response 40 Hz to 15 kHz +/- 3dB, 22kHz low pass lter
SNR 70 dB, A- weighted, Threshold of Clipping
THD 0.5% @ 1kHz, 22kHz low pass enabled
Headset/Microphone Port
Tip Headset Left +
First Ring Headset Right +
Second Ring Common/Ground/-
Sleeve Mic/Line Input +

18
ListenTALK USER MANUAL
Radio
Operating Frequency
1920 to 1930 MHz - North America
1880 to 1900 MHz - Europe, Australia
1895 to 1905 MHz - Japan
Average Power
4 mW - North America
10 mW - Europe, Australia
5 mW - Japan
Typical Range Indoor 100 m, Outdoor 200 m, depending upon conditions - North America, Japan
Indoor 150 m, Outdoor 300 m, depending upon conditions - Europe, Australia
Modulation GFSK – FHSS
TDD/TDMA/DCA
Security
Subscription – 40 bit (Pin Free)
Authentication – 32 bit
Encryption – 64 bit
NFC Frequency (Near Field Communications) 13.56 MHz
Power & Battery Management
Battery type Lithium – ion, rechargeable non-proprietary removable, 1200 mAh
Optional – 3 AAA Battery Compartment
Typical operate time
Li-ion – Participant Mode – 12 Hours
AAA – Participant Mode – 7 Hours
Li-ion – Leader Mode – 7 hours
AAA – Leader Mode – 4 hours
Typical charge time 4 Hours
Power save modes
Power down on loss of signal
Power down on disconnection of headset (1 min)
Power down on charging
Environmental
Temperature - Operation -10° C (14° F) to 40° C (104° F)
Temperature - Storage -20° C (-4° F) to 50° C (122° F)
Relative Humidity 0 to 95% relative humidity, non-condensing
LK-1 LISTENTALK TRANSCEIVER SPECIFICATIONS CONTINUED
Compliance
Standards
* Specications subject to change without notice.

19
LKR-11 LISTENTALK RECEIVER PRO SPECIFICATIONS*
Physical
Dimensions (H x W x D) with Belt
Clip 10 x 5.4 x 2.4 cm (3.93 x 2.13 x 0.93 in.)
Weight 79 g (2.79 oz.)
Ship Weight 206 g (7.20 oz.) with 454 g (1.0 lbs.) minimum
Enclosure material PC ABS Plastic
Indicators Display - 64 x 128 OLED, Variable brightness LED – RED/White multifunction
(Mute, Charge Status)
User Controls Volume up, Volume Down, Power/Status, Pairing
Programming Via software and USB port on Transceiver or via software and USB port on Docking Station
Connections
Headset – 3.5mm TRRS, CTIA complaint
USB – Micro USB, Control and Charging
Charger- 4 Contact, Control and Charging
Audio
Headphone Output
Speaker load 16 - 32 ohm load
Max output power 67 mW, 16-ohm load, Threshold of Clipping
Purpose Accepts standard earspeaker/headphones
Connector
System
Frequency Response 40 Hz to 15 kHz +/- 3dB, 22kHz low pass lter
SNR 70 dB, A- weighted, Threshold of Clipping
THD 0.5% @ 1kHz, 22kHz low pass enabled
Tip Headset Left +
First Ring Headset Right +
Second Ring Common/Ground/-
Sleeve Not Connected

20
ListenTALK USER MANUAL
Radio
Operating Frequency
1920 to 1930 MHz - North America
1880 to 1900 MHz - Europe, Australia
1895 to 1905 MHz - Japan
Average Power
4 mW - North America
10 mW - Europe, Australia
5 mW - Japan
Typical Range Indoor 100 m, Outdoor 200 m, depending upon conditions - North America, Japan
Indoor 150 m, Outdoor 300 m, depending upon conditions - Europe, Australia
Modulation GFSK – FHSS
TDD/TDMA/DCA
Security
Subscription – 40 bit (Pin Free)
Authentication – 32 bit
Encryption – 64 bit
NFC Frequency (Near Field Communications) 13.56 MHz
Power & Battery Management
Battery type Lithium – ion, rechargeable non-proprietary removable, 1200 mAh
Optional – 3 AAA Battery Compartment
Typical operate time Li-ion – Participant Mode – 12 Hours
AAA – Participant Mode – 7 Hours
Typical charge time 4 Hours
Power save modes
Power down on loss of signal
Power down on disconnection of headphone (1 min)
Power down on charging
Environmental
Temperature - Operation -10° C (14° F) to 40° C (104° F)
Temperature - Storage -20° C (-4° F) to 50° C (122° F)
Relative Humidity 0 to 95% relative humidity, non-condensing
LKR-11 LISTENTALK RECEIVER PRO SPECIFICATIONS CONTINUED
Compliance
Standards
* Specications subject to change without notice.