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Valid 5/3/18 through 6/29/18, only online only at LiftMaster.com. Coupon code is limited to the following products: 387LM, 374UT, 375UT. LiftMaster.com reserves the right to remove, add or change items on this promotion without prior notice. Other restrictions may apply. While supplies last.

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841LM

841lm is rated 1.9 out of 5 by 10.
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$99.95 USD PLUS SHIPPING AND TAX

The Automatic Garage Door Lock is a powerful add-on accessory that works automatically with the opener to provide an extra layer of garage security.

Features

Automatic operation, performs in tandem with the opener, so it always locks and unlocks. Anywhere Assurance, Smartphone monitoring with the MyQ® App means they always know that the garage is secure.


  • Absolute Protection, A deadbolt lock makes the garage door virtually impenetrable.
  • Audible Security,The sound of the lock engaging provides homeowners with assurance that the door is closed and secure.
  • Select new LiftMaster Garage Door Openers have the ability to automatically engage and disengage the lock everytime they operate.
  • Garage Door Lock Capable Openers are:
  • 8550W
  • 8587W
  • 8360W
  • 8500W

California Residents: Proposition 65 WARNING

Find a Part

Documentation

Rated 1 out of 5 by from Solenoid Weak Started upgrading my customers with this Auto Lock on 8550W Openers ( the only one I sell ) and have been getting many call backs for the Locks not Retracting Fully at times causing Door to jamb because of the pin still sticking out ( potential for a lot of damage to Door ) I’ve stopped selling this product until the bugs are worked out. I believe that there’s not enough power to the Solenoid to retract . I sell about 64 units of these per month so be aware of this problem
Date published: 2018-04-17
Rated 5 out of 5 by from Best purchase made I love this opener, best purchase I made in a while and the accessories
Date published: 2018-03-26
Rated 1 out of 5 by from Weak that liftmaster will only make this work! Weak liftmaster! I have 8355 and it won’t work unless I upgrade!
Date published: 2018-02-22
Rated 4 out of 5 by from Liftmaster Locks I too would have been disappointed if I had not had our front and rear 8550W garage doors installed by a professional and then had him install the 845LM locks as well. He found that the locks that initially delivered were not compatible with the units as they were two prong plugs and the 8550W requires a three prong plug. A quick call to Liftmaster and he returned the next day with the correct 845LM locks (yes, there must be an old and new version) and installed them on both doors. Nothing like the extra security!
Date published: 2018-02-08
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