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LiftMaster

Liftmaster 841LM Automatic Garage Door Lock

    • Based on 187 reviews
Condition: New
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$128.39 Why this price?
Holiday Deal · 14% off was $149.99

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Dec 30
Order within 21 hours and 59 minutes
Available payment plans shown during checkout

Features

  • The 841LM works automatically with your garage door opener so it always locks and unlocks with every operation of the door.
  • The model 841LM 12V lock is only compatible with the following garage door opener model numbers: 8550WL, 8587WL, 8360WL, 8500W.
  • It is not interchangeable with the 24V lock used on residential jackshaft garage door opener models 3800, 3900 and 8500.
  • Add a lock to each side of the door for the best defense against high winds and storms and intruders

Description

Features: Automatic operation, performs in tandem with the opener, so it always locks and unlocks. Anywhere assurance, smartphone monitoring with the myq app means homeowners always know that the garage is securesafety and security: Absolute protection, the automatic deadbolt lock makes the garage door virtually impenetrable audible security, the sound of the lock engages providing homeowners with assurance that the door is closed and secure. Compatibility: Works with three new select lift master auto lock capable garage door openers 8550w dc battery backup belt drive wi fi 8587w ¾ hp ac chain drive wi fi 8360w dc battery backup capable chain drive wi fi.

Brand: LiftMaster


Special Feature: Virtually Impenetrable, Sound of Lock Engages


Lock Type: Deadbolt


Item dimensions L x W x H: 8.5 x 4.5 x 4.3 inches


Material: Steel


Brand: ‎LiftMaster


Special Feature: ‎Virtually Impenetrable, Sound of Lock Engages


Lock Type: ‎Deadbolt


Item dimensions L x W x H: ‎8.5 x 4.5 x 4.3 inches


Material: ‎Steel


Recommended Uses For Product: ‎Securing and locking/unlocking a garage door in conjunction with a compatible garage door opener


Style: ‎Modern


Number of Pieces: ‎1


Control Method: ‎App


Connectivity Protocol: ‎Wi-Fi


UPC: ‎757347279797 012381185740


Global Trade Identification Number: ‎40


Manufacturer: ‎Liftmaster/Chamberlain


Part Number: ‎841lm & AOD Service Kit


Item Weight: ‎3.01 pounds


Product Dimensions: ‎8.5 x 4.5 x 4.3 inches


Item model number: ‎841lm & AOD Service Kit


Is Discontinued By Manufacturer: ‎No


Item Package Quantity: ‎1


Special Features: ‎Virtually Impenetrable, Sound of Lock Engages


Batteries Included?: ‎No


Batteries Required?: ‎No


Description Pile: ‎Lithium


Date First Available: August 5, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Dec 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Easy Replacement of My Other Model
My other model went out after about 6 years, tried everything and ultimately caved and bought this. Easy Switch and install.
Reviewed in the United States on May 16, 2024 by Ben
    • Roll up storage door electric locks
Review Image by RD RD
Review Image by RD RD
The latching garage door lock works well as an option to have wifi locks on a roll up door. The locks are wired to a circuit that switches 12v with 2 amps and the app used is a simple Wemo or Leviton app for a plug. When the plug is on the locks are open. When power is off they close. The code was written such that if the power is lost the locks will engage. The locks have a manual latch as well in case the wifi goes out. ... show more
Reviewed in the United States on January 26, 2022 by RD RD
    • Awesome Product
I ordered two of these for my garage, due to a slew of break ins in my area. Gotta say these things are awesome, and it's always cool to hear your garage door locking like a vault. The installation was fairly easy, but you do need some specialized tools for it. I don't even know what it's called, but is a drill bit that gauges up as you drill a hole in the track of the garage door. Use the template, measure, and then measure again. I almost messed up and had one of the bolts hitting the wheel on the garage door. Don't do what I did. Make sure there's enough clearance between the garage roller and template before you start. ... show more
Reviewed in the United States on April 2, 2020 by Mike
    • Great
Perfect replacement for our broken assembly.
Reviewed in the United States on February 8, 2024 by Russ Little
    • Does not last
I am on my third lock. Bought this August 8, 2022. Today, May 7, 2023, it no longer works. Find another type of lock if that is possible or you will be replacing this every year and a half to 2 years.
Reviewed in the United States on May 7, 2024 by pauli
    • Original product, BUT repackaged by seller
Product received is OEM, but is repackaged and not as advertised. Two major differences that matter. Screws received were not original but replacements with raised flat-heads (versus just flat heads), this reduces clearance. Wiring on the unit received was NOT 33' (10m), and was about 12', so I had to splice wires to install properly. Because this is a 'repackaged' new unit, likely no manufacturers warranty. I understand this Garage Door Lock comes bundled with a specific model Garage Door Opener that is frequently 'sold on the side'. That said, it is new, does work once you overcome the challenges. ... show more
Reviewed in the United States on July 14, 2024 by Eric
    • Trying to install.
Needs another way to install to attach to a garage rail and plunger going perpendicular.
Reviewed in the United States on January 10, 2024 by TEXPAT101
    • Good device to have for that added security.
Was delivered on time, and I had no problems installing on track. My garage track already had the predrilled holes on them, so all I had to do was screw the device in. The lock works great, easy to install and I will buy a 2nd for the other side. I recommend this lock if your LiftMaster has the shield icon, it does add more security to the garage door from being lifted. Once I press the garage button, the lock automatically unlocks and when it’s closing, the bolt engages and locks. ... show more
Reviewed in the United States on July 15, 2018 by Chris

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