Chamberlain LIFTMASTER 374LM Owner's Manual

Models 374LM and 374LMC 315MHz Security✚
WARNING
To prevent possible SERIOUS INJURY or DEATH from a moving
gate or garage door:
CAUTION
• ALWAYS keep remote controls out of reach of children. NEVER
permit children to operate, or play with remote control
transmitters.
• Activate gate or door ONLY when it can be seen clearly, is properly
adjusted, and there are no obstructions to door travel.
• ALWAYS keep gate or garage door in sight until completely closed.
Never permit anyone to cross path of moving gate or door.
AVERTISSEMENT
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.
ATTENTION

Instructions are described and illustrated below

1. Press and release the "learn" button on the
motor unit. The learn indicator light will glow
steadily for 30 seconds.
2. Within 30 seconds, press and hold the
button on the hand-held remote that you
wish to operate your garage door.
3.Release the button when the motor unit lights
blink. It has learned the code. If light bulbs
are not installed, two clicks will be heard.

To erase all codes from motor unit memory

To deactivate any unwanted remote, first erase all codes:
Press and the hold "learn" button on motor unit
until the learn indicator light goes out
(approximately 6 seconds). All previous codes
are now erased. Reprogram each remote or
keyless entry you wish to use.
OWNER'S MANUAL
The 374LM and 374LMC remote controls can activate four
separate 315MHz residential or commercial garage door
openers and/or gate openers. The instructions for programming
garage door openers are illustrated below. Please refer to the
original receiver programming for commercial and gate
products.
All four push buttons work with 315MHz Security✚
having an purple "learn" button. The rolling code between these
buttons and the receiver changes with each use, randomly
accessing over 100 billion new codes.
As an added feature, the 4th push button is capable of learning
or being trained to duplicate or match another CGI
manufactured 315MHz fixed code remote. This feature is
normally used when several remotes are required to operate
one fixed code device such as a gate opener or commercial
dock door. In this case, the code transmitted to the receiver
remains constant or fixed, not using the Security✚

When several remotes operate one device:

To match the 374LM and 374LMC to another CGI
1 2 3 manufactured remote's code (Remote Control X):
9 1 9 1
7 3 7 3
5 5
KG
KG
1. Begin by having both the 374LM and
1 2
2. Press and hold the 1st and 4th push
1 2 3
3. While it is in learn mode, hold Remote
KG KG
4. Press and hold the Remote Control X
5. The 4th button is now sending the same
1
2 3
KG KG
®
4-Button Remote Control
374LMC and Remote Control X available.
buttons on the 374LM and 374LMC until
the yellow indicator light, visible on the
bottom through a small hole, begins to
blink. It will blink for 30 seconds; during
this time it is in the learn or training mode,
and the buttons can be released.
Control X, another CGI fixed code
transmitter, back to back with FCC labels
touching as illustrated.
push button as you slowly slide the
remotes across each other until the
374LM and 374LMC indicator light blinks
very rapidly, indicating it has learned the
code. (If Remote Control X is also a
374LM and 374LMC, you must press and
hold its 4th push button.)
identical coded signal as Remote Control
X. This code will remain inside the 374LM
and 374LMC until replaced with another
new code by repeating steps 1-4 above, or
by resetting to Security✚ .
®
WARNING
WARNING
receivers
®
AVERTISSEMENT
format.
®
AVERTISSEMENT
FCC Label
Remote
Control X
Yellow
Indicator
Light
Yellow
Indicator
Light