LiftMaster 841LM Automatic Garage Door Lock linear ak11 WORM GEAR REDUCTION - Precision-machined

WORM GEAR REDUCTION - Precision-machined all-metal gear in contained lubrication housing

LiftMaster Q405

The transmitter is Multi-Code format with two 10-position coding switches providing 512 possible codes for each channel

LiftMaster K1C3196-3

Allows for timed automatic door closure after the door reaches the fully open position

LiftMaster 841LM Automatic Garage Door Lock linear ak11 WORM GEAR REDUCTION - Precision-machinedLiftMaster 841LM Automatic Garage Door Lock The Automatic Garage Door Lock is a powerful add on accessory that works automatically with the opener. When two locks are installed, the two point locking system has been engineered, tested, and approved to meet hurricane ready requirements by reinforcing the garage door automatically. Features Automatic Operation: Performs in tandem with the opener, so it always locks and unlocks. Anywhere Assurance: