841LM Automatic Garage Door Lock
841LM Automatic Garage Door Lock Sense of security. Feel completely safe with the ultimate security solution. Security's Sound. It's your biggest door. Give it an extra layer of protection. The Automatic Garage Door Lock works with select new LiftMaster Garage Door Openers to secure your garage door automatically every time it closes. For complete security that you can hear. Absolute Protection - A deadbolt lock makes your garage door virtually impenetrable. Audible Security - The sound of the lock engaging lets you know that you’re protected. Automatic Operation - Performs in tandem with the opener, so it always locks and unlocks. Anywhere Assurance - Smartphone monitoring with the MyQ App means you always know that the garage is secure. Compatible with LiftMaster Autolock Capable openers 8550WAL, 8587WAL and 8360WAL