®
Models NDIS and NDISC
WIRELESS DOORBELL AND INTERCOM
Overview
The Wireless Doorbell and Intercom can determine who is at the door from anywhere in the house. The doorbell and intercom have up
to a 1000 foot (300 m) range and use a 900 MHz secure digital radio link. The intercom is compatible with various Chamberlain Wireless
Products.
Carton Inventory
Rubber Pads
HOLD
Mounting Tape
OFF
VOLUME
MONITOR
ACTIVE
TALK
CHANNEL
1
3
2
4
Alcohol Wipe
Doorbell
Intercom
Features
INTERCOM
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
Talk
Button
2
1
Active Light
Channel
Lights
Channel Select
Button
Speaker
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.
2
1
T A
4
L
K
A C T I V E
3
V
O
O L
O L U M F E
F
H
D
M O N
I
T O
R
Monitor
Button
Volume DOWN
Button
Volume UP
Button
Dipswitch #1
Dipswitch #2
AC Adapter
Learn Button
DOORBELL
Call Button: To talk, press and release the Call button and all
intercoms in the network will receive the signal. When holding
down the Talk button on a different intercom, a secure channel
is created and the other intercoms in the network do not hear
the conversation. Once a secure link is made, the Call button
on the doorbell does not need to be pressed to speak again.
On/Off: To turn intercom ON, press Talk button. To turn
intercom OFF, hold down the Volume DOWN button for 3
seconds.
Talk Button: Following the ringing
of the doorbell by a guest, press
HO
LD
O
FF
V
OL
UM
E
A
C
TI
VE
M
ON
and hold the Talk button to talk
to the guest. Once the link to
the doorbell is made, any other
intercoms in the network cannot
hear the conversation.
IT
OR
TA
LK
Battery: The AA Alkaline batteries (not provided) will last up to
a year depending on use. (Lithium batteries recommended for
colder environments.)
Alternate Chimes: The doorbell
can be set to ring with two different
chime patterns, to identify which
doorbell is signaling. To change
chime pattern, set Dipswitch #2 to
the UP position.
Volume: Pressing the Volume DOWN button will lower the
volume and pressing the Volume UP button will increase the
volume.
Battery: The AA Alkaline batteries
(not provided) will last up to a year
depending on use. When batteries
Volume: To increase the doorbell
volume, set Dipswitch #4 to the UP
position.
OPTIONAL
are low intercom will emit three
beeps every ten minutes.
A DC Adapter (not provided)
2
1
A
T
4
L K
A C T
V O
3
I V
E
F F
O
D
L U
M E
H O
L
M O N
I T
O R
Sensitivity: To increase sensitivity
on the doorbell set Dipswitch #3 to
the UP position.
can also be used to power the
intercom. In this case, the channel
lights will remain on.
1
Program Additional Intercoms
The intercom can be programmed to at least one other intercom to become a network or it can be programmed into an existing network.
CREATE NEW NETWORK
ADD TO AN EXISTING NETWORK
1
1
2
Press the Learn button on the
new intercom until a beep is
heard.
Before programming, clear
2
1
T A
4
L
K
A
3
C T I V E
V
O
D
O L U M
F
F
E O L
H
memory on all intercoms. Press
the Learn button on the new
intercom until a beep is heard.
M O N
T I O
R
2
1
T
A
E
4
L
K
A C T I V
3
V O L F U
O
D
F
H
O
M E
L
M O N
T I O
R
Within 10 seconds put any
networked intercom into Learn
Mode (press the Learn button
until a beep is heard).
2
Within 10 seconds put the
second intercom into Learn
Mode (press the Learn button
until a beep is heard).
HOLD
OFF
VOLUME
MONITOR
CHANNEL
ACTIVE
HOLD
OFF
TALK
VOLUME
1
3
MONITOR
CHANNEL
2
4
ACTIVE
TALK
1
3
2
4
Each intercom will emit a tone when entering programming
mode. It may take up to 3-1/2 minutes for a secure network to
be established. 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.
Each intercom will emit a tone when entering programming
mode. It may take up to 3-1/2 minutes for a secure network to
be established.
3
Press and release the Talk
button to verify network is
complete.
H
OLD
O
FF
V
OL
UME
A
C
TI
VE
M
O
N
3
IT
O
TA
LK
R
Press and release the Talk
button to verify network is
complete.
H
OLD
O
FF
V
OL
UM
E
A
C
TI
V
E
M
O
N
IT
OR
TA
LK
Operation
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.
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.
H
O
LD
O
FF
V
OLUM
E
A
C
TI
VE
M
ON
IT
O
TA
LK
R
1
2
Monitor Mode: Monitor Mode is used
H
O
LD
O
FF
V
OLUM
E
A
C
TI
VE
HO
LD
O
FF
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
M
O
N
IT
OR
Channel Button: Press the Channel
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.
V
TA
LK
OL
UM
E
A
C
TI
VE
M
O
N
IT
O
1
3
TA
LK
R
C
HA
NNE
L
2
4
1
3
C
HA
NNE
L
2
4
is heard. For extended Monitor usage, consider using a plug-in
transformer. 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 Talk button to exit Monitor Mode. A tone
will be heard indicating Monitor Mode is no longer active.
Monitor mode functions only between base unit intercoms,
not with the doorbell unit.
Troubleshooting
Intercom does not function.
Check batteries in intercom. If using a DC Adapter ensure that it
is plugged in.
Ensure intercom is connected to a network. See Program.
Ensure that intercoms are on the same channel. See Operation.
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.
3
Troubleshooting
Doorbell beeps every ten minutes.
The battery is low in the doorbell. Replace with AA Alkaline
batteries.
Intercom beeps every ten minutes.
The battery is low in the intercom. Replace with AA Alkaline
batteries or operate it with DC Adapter (not provided). A 12 volt,
300mA DC Adapter may be used (center positive polarity on the
round plug).
Need to clear doorbell’s memory.
Press and hold Learn button, an initial beep will be heard.
Continue to hold until a second beep is heard (about 6 seconds).
Once memory is clear the doorbell can be programmed to a new
network.
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 6 seconds).
Ensure other intercoms are not activated during this time. Once
memory is clear the intercom can be programmed to a new
network.
Intercom can not be programmed to network.
A network may contain up to 12 intercoms. It may be necessary
to clear the network and reprogram all the intercoms to the
network. See Programming Intercom.
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.
The intercom does not connect to another intercom and a
green light is on longer than 3-1/2 minutes.
The intercom is out of range. Place the intercom closer to the
other intercoms in the network, with the antenna pointing up.
The other intercom in the network has no power. Replace the
batteries. The intercom has not completed programming. Clear
the intercom's memory and reprogram.
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 Features.
The intercom VOX mode is not working.
The intercom will take about 40 seconds to reactivate after
responding to a doorbell call.
Doorbell does not function.
Check batteries in doorbell. When you press the Call button you
should hear a tone. Ensure doorbell is connected to a network.
See Program Intercom to Doorbell.
The doorbell will not function when an intercom is in Monitor
Mode.
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.
Doorbell is not getting expected transmission range.
Keep doorbell away from metal objects and electrical wiring.
Do not mount doorbell on a tree, masonry, or metal surface.
When used in buildings with stucco or cement walls, the range is
greatly reduced.
Warranty
ONE YEAR LIMITED WARRANTY
Accessories
41B238 . . . . . . . . . . . . . . . . . . . . . . . . 12 Vdc 300mA Adapter
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.
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:
FOR TECHNICAL SUPPORT DIAL OUR TOLL
FREE NUMBER:
1-800-528-9131
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•
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Reorient or relocate the receiving antenna.
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.
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.
© 2010, The Chamberlain Group Inc.
114A4096D
All Rights Reserved
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