Chamberlain Group The NLS1 Wireless Portable Intercom User Manual 1
Chamberlain Group Inc, The Wireless Portable Intercom 1
Contents
- 1. User Manual 1
 - 2. User Manual 2
 
User Manual 1

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Carton Inventory
Overview
The Intercom has up to a 1000' range and allows 
multiple simultaneous conversations, using a 
900 MHz secure digital radio link. The intercoms form 
an exclusive network and respond only to other 
intercoms in the network.
Intercom (2 in Model NLS2)
1
Rubber Pads 
(2 in Model NLS2)
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Operation & Features
Channel Select Button: Press 
the Channel Select button to set 
intercom to one of four secure 
channels or the paging channel. 
The default channel for the 
intercom is the paging channel 
where all four channel lights are 
lit. An intercom on a channel can only hear an 
intercom on the same channel or on the paging 
channel.
Battery: The AA Alkaline batteries 
(not provided) will last up to a year 
depending on use. When batteries 
are low intercom will emit two 
beeps every ten minutes.
An AC Adapter (not provided) can 
also be used to power the 
intercom. In this case, both the 
power and channel lights will remain on.
Conference Mode: Conference Mode allows multiple 
intercoms to participate in a conversation compared 
to Normal Mode in which only two intercoms 
can communicate. All intercoms must be set to 
the same channel or the paging channel to be 
in Conference Mode. To put intercom in 
Conference Mode set Dipswitch #2 to UP position.
Monitor Mode: Monitor Mode is 
used to monitor the noise in a 
specific room. Place the intercom 
in the room that is to be monitored 
and press the Monitor button until 
a tone is heard. While in monitor 
mode the Active light will blink if 
no sound is heard and will be solid if sounds are 
heard. Any other networked intercom can listen to 
that room. If a specific channel is selected for Monitor 
Mode then only other intercoms on that channel or on 
the paging channel can listen. Press the Monitor 
button again to exit Monitor Mode. A tone will be 
heard indicating Monitor Mode is no longer active.
Voice Activation Mode (VOX): Voice Activation 
Mode (VOX) allows a call to be answered without 
pressing the Talk button. Once a call is heard on an 
intercom which has been set to VOX, a response can 
be given by speaking loudly into the intercom. There 
will be a slight delay when VOX is first activated by a 
voice, but will continue to transmit audio until the 
speaking stops. To put intercom into VOX, 
place Dipswitch #1 to the UP position. While 
in VOX mode, a call may be initiated by 
pressing the TALK button.
On/Off: To turn intercom ON, press Talk button. To 
turn intercom OFF, hold down the Volume DOWN 
button for 3 seconds.
Talk Button: To talk, hold down 
the Talk button. All intercoms in 
the network that are on the same 
channel will receive the signal. 
Release the Talk button when 
done talking and within 10-15 
seconds press and hold the Talk 
button of a different intercom to make a secure 
channel between the two. Once the channel is made 
the other intercoms in the network cannot hear the 
conversation.
Volume: Pressing the Volume DOWN button will 
lower the volume and pressing the Volume UP button 
will increase the volume. The lowest volume setting 
will mute the intercom.
Volume 
UP 
Button
Talk 
Button
Learn Button
Dipswitch #1
Dipswitch #2
AC Adapter
Model NLS1 & NLS2
Wireless Portable Intercom - Extreme Range
® 
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OPTIONAL
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Channel 
Select Button
Channel 
Lights
Active Light
Volume 
DOWN 
Button
Monitor 
Button
Speaker
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2
Assemble Intercom
Step 1
Step 2
Install 4 AA Alkaline batteries (not provided).
Programming Intercom
Adhere rubber pads to bottom.
Repeat Steps 1 and 2 for any additional intercoms.
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The intercom must be programmed to at least one 
other intercom to become a network or it can be 
programmed into an existing network.
Create New Network
Press the Learn button on the new intercom until a 
beep is heard. Within 10 seconds put the second 
intercom into Learn Mode (refer to the following 
table).
Add to an Existing Network
Press the Learn button on the new intercom until a 
beep is heard. Within 10 seconds put any networked 
intercom into Learn Mode (refer to table below).
Press and release the Talk button to verify network is 
complete.
INTERCOM LEARN MODE
  Press the Learn button 
until a beep is heard.
  Press and hold both 
buttons for 5 seconds.
OR
Each intercom will emit a tone when programmed into 
network. Repeat for any additional intercoms.
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Each intercom will emit a tone when programmed into 
network. Repeat for any additional intercoms.
NOTE: Do not program new intercoms to each other 
before adding them to the network or they will form a 
separate network and the memory will need to be 
cleared.
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INTERCOM LEARN MODE
  Press the Learn button 
until a beep is heard.
  Press and hold both 
buttons for 5 seconds.
OR
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Troubleshooting
3
Intercom does not function. 
Check batteries in intercom. If using an AC Adapter 
ensure that it is plugged in.
Ensure intercom is connected to a network. 
See Programming Intercom.
Ensure that intercoms are on the same channel. See 
Operation & Features.
Intercom is not getting expected transmission 
range.
Keep antenna vertical. Keep intercom away from 
metal objects and electrical wiring. Cell phones, 
cordless phones, or other radio devices may also 
limit range.
Intercom beeps every ten minutes.
The battery is low in the intercom. Replace with AA 
Alkaline batteries or operate it with AC Adapter (not 
provided). A 12 volt, 300mA AC Adapter may be used 
(center positive polarity on the round plug).
Static and feedback is heard in intercom.
The intercoms are too close to each other. A cordless 
phone, cell phone, or other radio devices can also 
cause static.
Need to clear intercom’s memory.
Press and hold Learn button, an initial beep will be 
heard. Continue to hold until a second beep is heard 
(about 15 seconds). Ensure other intercoms are not 
activated during this time. Intercoms in the network that 
are on will signal during the clearing process. Once 
memory is clear the intercom can be programmed to a 
new network.
Intercom is sending audio while no buttons are 
pressed.
The sending intercom is set to Monitoring Mode or Voice 
Activation Mode and will activate when sound is heard. 
It can be taken out of Monitoring Mode by pressing the 
Talk button. It can be taken out of Voice Activation Mode 
by setting Dipswitch #1 to DOWN position.
See Operation & Features.
NOTE: Manufacturer is not responsible for any radio or 
TV interference caused by unauthorized modifications to 
this equipment. Changes or modifications not expressly 
approved by the manufacturer could void the authority to 
operate the equipment.

  © 2009, The Chamberlain Group Inc.
114A4095  All Rights Reserved
NOTICE: To comply with FCC and or Industry Canada rules (IC), adjustment or modifications of this 
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the battery. 
THERE ARE NO OTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. 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.
FOR TECHNICAL SUPPORT DIAL OUR TOLL FREE NUMBER: 
1-800-528-9131
www.chamberlain-DIY.com
One Year Limited Warranty
The Chamberlain Group, Inc. warrants to the first retail purchaser of this product that it is free from defect in materials 
and/or workmanship for a period of 1 year from the date of purchase.