Liftmaster 841LM Automatic Garage Door Lock

BrandLiftMaster
Item Dimensions LxWxH8.5 x 4.5 x 4.3 inches
Control MethodApp
  • 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
SKU: B074L9JQQR Category:

Device detailed 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.

Features and specification

Manufacturer

Item Package Quantity

‎1

Batteries Included?

Batteries Required?

Product Dimensions

‎8.5 x 4.5 x 4.3 inches

Description Pile

Frequently asked question

Is this compatible with new B1381 Chamberlain led opener?

Yes it is. I purchased the B1381 in Dec 2019 and it has the security shield symbol on the cover ( it is a shield with half light and half dark divided diagonally). It also has two lock connectors on the unit next to the up and down adjustment buttons close to where you connect the wires for the sensors and control pane… see more Yes it is. I purchased the B1381 in Dec 2019 and it has the security shield symbol on the cover ( it is a shield with half light and half dark divided diagonally). It also has two lock connectors on the unit next to the up and down adjustment buttons close to where you connect the wires for the sensors and control panel and the WiFi learn button. Since it has two lock connectors if you want you can connect two of these locks, one on each side of your door.

Is this compatible with Chamberlain openers?

It is compatible with at least some some Chamberlain openers. Liftmaster and Chamberlain are the same company. To know if yours is compatible the two requirements are for it to have the shield symbol on the cover and for there to be two lock connectors on the unit next to the up and down adjustment buttons. I have the… see more It is compatible with at least some some Chamberlain openers. Liftmaster and Chamberlain are the same company. To know if yours is compatible the two requirements are for it to have the shield symbol on the cover and for there to be two lock connectors on the unit next to the up and down adjustment buttons. I have the Chamberlain B1381 and it is compatible.

Wiil this work on the Chamberlin B970?

NO, this will not work with the B970

How far does the box protrude laterally from the track? (e.g. what is the length of the plastic box with the bolt retracted?)

The box protrudes 7.200 from track. when in locked position the bolt protrudes .800 from inside surface of track

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