How to Install the LiftMaster Automatic Garage Door Lock, Model 841LM | All Security Equipment

This video demonstrates how to install the LiftMaster Automatic Garage Door Lock, model 841LM. The Automatic Garage Door Lock is compatible with LiftMaster garage door openers that bear the Security Shield. The garage door opener used in this video is the model 8550W.
For more information about the LiftMaster products covered in this video, please reference the following articles:
Features and Benefits of Lock Capable Garage Door Openers: bit.ly/Features....
Additional Resources:
LiftMaster Automatic Garage Door Lock 841LM: allsecurityequ...
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