Linear MULTI-CODE 4120 User manual

MODEL 4120 TWO CHANNEL TRANSMITTER
Congratulations! You have just purchased a MULTI-CODE Digital Transmitter, which we believe to be
the nest product of its kind on the market. With little care this transmitter should provide you with
many years of excellent service. Please take a moment to read the following instructions and you will
nd that setting your new transmitter will be quite an easy matter.
ACCESSING THE CODE SWITCH
Insert a small coin into the slot located at the bottom end of the transmitter. Twist the coin and remove
the access cover to expose the code switches and battery compartment.
CODING
Before placing your transmitter into service, we urge you to set your codes, in order not to interfere
with neighboring systems, and to provide security for your own system. You will note that the model
4120 transmitter has two, ten position code switches (see gure 1). We strongly urge that several
coding schemes be avoided: ALL ON; ALL OFF; 2, 4, 6, 8, 10 ON; 1, 3, 5, 7, 9 ON. These positions are
similar to our or other manufacturer’s test positions, or are frequently used.
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PRINTER’S INSTRUCTIONS:
INSTR,INSTL,MC4120,2CH,TX - LINEAR P/N: 214881 Rev-C - INK: BLACK - MATERIAL: 20 LB. MEAD BOND - SIZE: 9.000” X 3.500” - SCALE: 1-1 - SIDE 1 OF 2
INSTALLATION INSTRUCTIONS
Copyright © 2020 Nortek Security & Control 214881 Rev-C
Figure 1
CODE SWITCH
WARNING: Changes or modications not expressly approved by the manufacturer could void the user’s 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 Federal Communications Commission (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.
FCC & IC Notice
This device contains licence-exempt transmitter(s) / receiver(s) that comply with Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:
1) This device may not cause interference.
2) This device must accept any interference, including interference that may cause undesired operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et
Développement économique 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;
2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le
fonctionnement.
USA & Canada Toll Free [phone]
or dial [phone]
www.nortekcontrol.com

WARRANTY
ALL MULTI-CODE door related products carry an eighteen (18) month warranty against defects in
workmanship or material. This warranty begins at the date of manufacture, for eighteen months.
Nortek Security & Control warranties our product only to our authorized dealers and distributors,
and not to the end customer. If you have any questions about our warranty, please ask your dealer
to determine the nature and scope of his warranty. Nortek Security & Control does not assume, and
is not responsible for, any real or consequential damages from claims against the performance of
our product, nor is it liable for any costs related to loss of life, property, or revenue. Further, Nortek
Security & Control is in no way responsible for installation of our product, and will assume no costs
to reinstallation or removal. Nortek Security & Control Warranty is in lieu of all other warranties,
expressed, or implied.
PLEASE NOTE
Nortek Security & Control has devoted a great deal of time and research in order to provide the
most reliable equipment possible. Certain limitations must be observed.
(1) MULTI-CODE radio components must conform with FCC Part 15 requirements. For this reason, the range
and power of our radios is within specied limits.
(2) As with all manufacturers, Nortek Security & Control radios must accept all signals that they receive.
This may, in rare instances, create difculty.
(3) You should test your entire system occasionally in order to be sure that all components are working in
good order.
(4) Nortek Security & Control dealers can provide you with information regarding the use of our radio
controls, and can provide valuable installation and operation information, when requested.
PRINTER’S INSTRUCTIONS:
INSTR,INSTL,MC4120,2CH,TX - LINEAR P/N: 214881 Rev-C - INK: BLACK - MATERIAL: 20 LB. MEAD BOND - SIZE: 9.000” X 3.500” - SCALE: 1-1 - SIDE 2 OF 2
If you have two single channel receivers: Set your transmitter so that the ten position
switch on side A will match your receiver #1. Set the ten position switch on transmitter side B
to your receiver #2 (see gure 2).
If you have a MULTI-CODE™ 3021 or 3028 two channel receiver: Set the receiver
and transmitter (side A and B) code switch positions 1-9 to match. The 10th position on your
transmitter code switches are used for channel selection.
Channel 1 on the receiver is selected by moving the 10th position of the transmitter side A to the
off (open) position. Channel 2 is selected by moving the 10th position of the transmitter side B to
the on (closed) position. Once the codes have been set, check the operation and replace the lower
cover.
TRANSMITTER INSTALLATION
The transmitter is completely self contained, including battery, and can be operated while mounted
in the car. It is supplied with a clip for attaching to the sun visor, if desired. If the clip is used, attach
to the case by sliding it into the recess provided on the back of the transmitter until the small
dimples t into the holes in the clip.
CODE SWITCH
SIDE A
CODE SWITCH
SIDE B
Figure 2