LiftMaster 841LM Automatic Garage Door Lock - Deadbolt Lock for Enhanced Security with myQ® Compatibility and Wi-Fi Connectivity for Select Models

The LiftMaster 841LM Automatic Garage Door Lock is a powerful, add-on accessory designed to provide enhanced security for your garage. This deadbolt-style lock integrates seamlessly with compatible LiftMaster garage door openers, such as the 8550WL, 8587WL, 8360WL, and 8500W models, locking and unlocking automatically with every door operation. Powered by myQ® technology, homeowners can monitor their garage door’s status from anywhere and receive alerts if it’s left open, offering peace of mind and modern convenience. When installed on both sides of the door, the 841LM meets hurricane-ready requirements, fortifying your garage door against high winds and storms. Its audible engagement sound assures users of security, while the durable steel construction ensures long-lasting performance. Not compatible with residential jackshaft models, this 12V lock is a robust addition to LiftMaster’s security lineup, making your garage door virtually impenetrable and fully integrated with the latest in smart home technology. Includes installation hardware and a one-year warranty.

AUTOMATIC DEADBOLT LOCK FOR ENHANCED SECURITY: Automatically locks and unlocks with every garage door operation, securing the garage with every close.

POWERED BY MYQ® FOR REMOTE ACCESS: Monitor and control the lock from anywhere with the myQ® app, providing real-time alerts for open/close status and enhanced security.

ENGINEERED FOR STORM RESISTANCE: When installed on both sides of the door, it creates a two-point locking system that meets hurricane-ready requirements.

AUDIBLE SECURITY CONFIRMATION: Produces a distinct sound when locking, giving homeowners the assurance that their garage door is securely shut.

COMPATIBILITY WITH SELECT MODELS: Works with LiftMaster models 8550WL, 8587WL, 8360WL, and 8500W; not compatible with 24V locks used in jackshaft openers like models 3800, 3900, and 8500.

Specifications:

• Model: 841LM
• Type: 12V Deadbolt Garage Door Lock
• Compatibility: 8550WL, 8587WL, 8360WL, 8500W
• Connectivity: Wi-Fi (myQ® app)
• Material: Steel
• Dimensions: 8.5 x 4.5 x 4.3 inches
• Security: Auto-locks with each close, hurricane-resistant with dual locks
• In the Box: Lock, screws, 33' wire, template
• Warranty: 1 year
• Power Source: 12V (not compatible with 24V models)
• Operation: Automatic locking/unlocking with opener operation
• App Control: myQ® app for remote access and alerts
• Sound Feedback: Audible lock engagement
• Installation: Compatible with LiftMaster openers with security shield
• Additional Feature: Dual locks for high-wind/hurricane resistance
• Recommended Use: Adds security for residential garage doors
• Style: Modern design