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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. When two locks are installed, the two-point locking system has been engineered, tested and approved to meet hurricane-ready requirements* by reinforcing the garage door automatically.   *If your garage door requires a center post to be installed during a wind event, the LiftMaster Automatic Garage Door Lock cannot be used to replace that system. Please contact your local LiftMaster installer or garage door manufacturer.

Features

Automatic Operation: Performs in tandem with the opener, so it always locks and unlocks. Anywhere Assurance: Powered by myQ technology, homeowners will have the ability to open and close their garage door from anywhere* and will receive alerts if its left open.   *Cellular data or Wi-Fi connection required. Test equipment regularly and follow safety instructions.  
  • Absolute Protection:A deadbolt lock reinforces the garage door automatically when the garage door is closed.
  • Audible Security:The sound of the lock engaging provides homeowners with the assurance the garage door has been secured.
The Automatic Garage Door Lock is available with new LiftMaster Garage Door Opener models 8500W, 8550W, 8587W and 8360W manufactured after August 2017.

California Residents: Proposition 65 WARNING

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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
  • y_2018, m_7, d_15, h_4
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