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841LM Liftmaster Power Deadbolt Garage Door Opener Lock
The Automatic Garage Door Lock is a powerful add-on accessory that works automatically with the opener. When two locks are installed, the two-point locking system has been engineered, tested to meet hurricane-ready requirements by reinforcing the garage door automatically.
841LM compatibility - LiftMaster Garage Door Opener models 8500W, 8550W, 8587W and 8360W manufactured after August 2017
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: http://bit.ly/FeaturesandBeneLockCapableGarageDoorOpeners Additional Resources: Technical Support: http://bit.ly/ChamberlainTechSupport Subscribe: https://www.youtube.com/liftmastersupport Still need help? Contact Chamberlain Technical Support: http://bit.ly/ContactChamberlainSupport