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LiftMaster Garage Door Openers 374LM Security+ Remote Control Coding Instructions

LiftMaster PROFESSIONAL

Model 374LM 315MHz Security + 4 Channel Remote Control

The 374 315MHz remote control can activate four separate 315MHz Security+ residential or commercial garage door openers and or gate openers. The instructions for programming garage door openers are listed below.  Please refer to the original receiver programming for commercial and gate operators.

All four push buttons work with 315 MHz Security+ receivers having a purple "learn" button. The rolling code between these channels and the receiver changes with each use, randomly accessing over 100 billion new codes.

As an added feature, the 4th 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 on fixed code devise such as a gate operator or commercial dock door.  In this case, the code transmitter to the receiver remains constant or fixed, not using the Security+ format.

*************   WARNING   *************

            Moving Door can cause serious injury or death.

·         DO NOT install transmitter unless the door operator’s safety reverse works as required by the door operator’s manual.

·         Wall control must be mounted in sight of door, at least 5 feet above floor and clear of moving door parts.

·         Keep people clear of opening while door is moving.

·         DO NOT allow children to play with the transmitter or door operator.

If safety reverse does not work properly:

·         Close door then disconnect operator using the manual release handle.

·         DO NOT use transmitter or door operator.

·         Refer to Door and Door Operators Owner’s Manuals before attempting any repairs.

_________________________________________________

            Electrical Shock can cause serious injury or death.

·         Power cord must be unplugged before attaching any wires,

·         Be sure wire ends do not touch each other or other terminals.

If you have questions or if you need a manual, contact the distributor or manufacturer of the operator.

Programming instructions are described below.

WHEN USED WITH SECURITY+ GARAGE DOOR OPENERS

To program the opener to accept the remote control code:

  1. Press and release the “Learn" button on the opener panel.  This can be found where you see the antenna wire hanging from the motor head (you may have to take the lens cover off). If antenna wire is not hanging from motor head then you have an external receiver which is a black box approx. 6" x 2" mounted somewhere in the garage with a antenna wire hanging from it (pop off cover to find Learn Code Button). The indicator light on the panel will begin to blink and the opener lights will flash once.
  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.

Now the opener will operate when that push button is pressed.

To erase all remote control codes from the receiver:

Press and hold the “Learn” button on opener panel until the indicator light turns off (about 6 seconds). All transmitter codes inside the receiver are now erased. Then follow the steps above to re-program each remote control.

When Several Remotes operate one device:

To match the 374LM to another CGI manufactured remote’s code (Remote Control X):

  1. Begin by having both the 374LM and Remote Control X available.
  2. With the 374LM button side up, press and hold both 1st and 4th push buttons until the yellow indicator light begins to blink. Visible at the bottom through a small hole begins to blink.  It will blink for 30 seconds; during this time it is in “learn” mode. and the buttons can be released.
  3. While it is in learn mode, hold remote control X, another CGI fixed code transmitter back to back with the FCC labels touching.
  4. Press and hold the Remote Control X push button as you slowly slide the remotes across each other until the 374LM indicator light blinks very rapidly, indicating it has learned the code. (If Remote Control X is a 374 , you must press and hold its 4th push button).
  5. The 4th button is now sending the same identical coded signal as Remote Control X.  This code will remain inside the 374LM until replaced with another new code by repeating steps 1-4 above, or by resetting to Security+

Now the device will operate when the 4th push button is pressed.

This code will remain inside the remote control until replaced with a new code by repeating the above steps.

Resetting the 4th push button back to Security+ as follows:

Push and hold the 1st and 4th buttons while observing the small yellow indicator light.  Hold both button for 10 seconds until the yellow indicator light stops blinking.  The remote has defaulted to one of six randomly preprogrammed Security+ settings.

The Remote Control Batteries:

The Lithium batteries should produce power for up to 5 years. To replace, pry open case with visor clip or screwdriver. Insert batteries positive side up (+). Dispose of old batteries properly.

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