LiftMaster 841LM Automatic Garage Door Lock

Add an extra layer of security to your garage door with the LiftMaster 841LM Automatic Garage Door Lock from North Shore Commercial Door. This powerful deadbolt lock makes it nearly impossible for intruders to gain entry to your garage. The 841LM works automatically with your garage door opener so it always locks and unlocks with every operation of the door. For security you can hear, the sound of the lock engaging lets you know that your garage door is secure. Have that assurance anywhere with Smartphone monitoring and the MyQ® App. With a lock on each side of the door, the 841LM can even be the best defense for your door against high winds and storms that can be released manually when needed. Ultimately, the 841LM is a certified safe solution that has been UL tested. One year limited warranty.

PLEASE NOTE

• For use on residential garages with an entry door ONLY.
• Install on sectional doors with torsion assemblies ONLY. 

COMPATIBILITY

The LiftMaster 841LM Automatic Garage Door Lock is compatible with select new LiftMaster Garage Door Openers with a Security Shield for absolute protection:

• LiftMaster 8550WL Elite Series DC Battery Backup Belt Drive Wi-Fi Garage Door Opener
• LiftMaster 8587W (Coming Soon) Elite Series 3/4 HP AC Chain Drive Wi-Fi Garage Door Opener
• LiftMaster 8360W Premium Series DC Battery Backup Capable Chain Drive Wi-Fi Garage Door Opener

WHAT'S INCLUDED

• One (1) Automatic Garage Door Lock
• Two (2) 1/4"-20x1/2" Screws
• 33' (10 m) Wire
• Template

PRODUCT HIGHLIGHTS

• Item Number: 841LM
• Automatic Garage Door Lock by LiftMaster
• Powerful deadbolt lock makes it nearly impossible for intruders to gain entry to your garage
• Works automatically with your garage door opener so it always locks and unlocks with every operation of the door
• For security you can hear, the sound of the lock engaging lets you know that your garage door is secure
• Have assurance your garage is secure with Smartphone monitoring and the MyQ® App
• Add a lock to each side of the door for the best defense against high winds and storms 
• Can be released manually when needed
• Certified safe solution that has been UL tested
• One year limited warranty