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LiftMaster Garage Door Openers 974LM Security+ Remote Control Coding Instructions

LiftMaster PROFESSIONAL

Model 974LM Security + 4 Channel Remote Control

The 974LM remote control can activate four separate residential or commercial garage door openers and/or gate openers.  The instructions for programming garage door openers are below.  Please refer to the original receiver programming for commercial a and gate products.

All four push buttons work with Security + receivers. having and orange "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 Chamberlain manufactured fixed code or billion-code remote.  This feature is normally used when several remotes are required to operate on fixed code devise 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+ 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 describes below. The additional push buttons can also activate other garage door openers and/or light controls. (Instructions for programming light products are included with those accessories).

Instructions are described below:

  1. Press and release the “learn” button on the motor unit.   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 box plugged in or mounted somewhere in the garage with a antenna wire hanging from it (pop off cover to find Learn Code Button). 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 light blinks. 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 hold the “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.

When Several Remotes operate on device:

To match the 974LM to another Chamberlain manufactured remote code(remote X):

  1. Begin by having both the 974LM and remote control X available.
  2. Press and hold the 1st and 4th push button on the 974LM 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.
  3. While it is in the learn mode, hold Remote control X, another Chamberlain fixed or billion 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 974LM indicator light blinks very rapidly, indicating it has learned the code.  (If Remote Control X is also a 974LM, 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 974LM until replaced with another new code by repeating steps 1-4 above, or by resetting to Security +.
  6. 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 buttons for ten seconds until the yellow indicator light stops blinking.  The remote has defaulted to one of six randomly preprogrammed Security+ setting.

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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