Download Schematic Liftmaster Garage Door Wiring Diagram Gif. Savesave liftmaster (garage door project) for later. The liftmaster contractor series comes with a wide range of 1/2 hp garage door openers.
I went through all of the suggestions above but it would not open and close the door.
I picked up a couple pairs of these liftmaster 41a5034 garage door safety sensors, which i thought i might be able to use for other sensing on my homebrew home control system. Inside the garage door opener is a button. Most garage door openers will stop the door on a second press of the button after it's is opening. Liftmaster is a popular style of garage door opener that can link to the garage doors of your home and open them remotely.