Closes the door automatically when you forget
( works on all garage doors)
Closes the door for you automatically if you forget. Compatible with all overhead garage doors and openers Select the door closing time from the built-in timer, from 2 minutes to 20 minutes. or push the button twice to override and leave door open when working in the garage Audio warning when door is about to close. Includes wall button controller and door sensor. Very Easy to install takes 10 minutes Can Replaces your traditional wall button or work with it No power adapter or battery is required. No major additional wiring.

Stop your car in the same spot everytime 
(works on most newer garage doors)

Laser Garage Parking Assist Helps you stop your car in the right spot everytime. Easy to install connects to IR sensor on your liftmaster opener can install 2 per garage door opener

Warns you when someone is on your property.
LiftMaster 835LM Wireless Pedestrian and Vehicle Alert System

Detects motion up to 30 feet away with wide 120 degree coverage

Can connect up to 4 motion sensors to one base

(use 836LM for extra sensors)

Transmits signal to base up to 1/2 mile away. 

Installs in minutes !!

Chamberlain-Liftmaster RJO-3800 residential sectional door jackshaft garage door opener.unit includes: operator, motion-detecting control panel, (1) 373lm remote control, power door lock, cable tension monitor, remote light. Product Details(click here)

Installation Manual