Garage Door Opener Systems

A garage door opener is a motorized device that opens and closes garage doors. Most are controlled by switches on the garage wall, as well as a garage door opener remote that is usually carried in the garage owner`s car. There are many different types of garage door openers, such as residential and commercial openers.

The first garage door opener remote control was consisted of a simple transmitter and a receiver which controlled the opener mechanism. The most common style of a residential garage door opener is the trolley operator. The motor hangs near the center of the ceiling and a rail guides a arm across the ceiling to the top of the door way.

A common misconception regarding openers is that the door opener lifts the door directly. Most of the lifting is done by the counterbalance system. Using either torsion springs or linear expansion springs.