Garage Door Opener Parts Explained

Garage opener parts are the operating system for the movement of the garage door.

What is a Garage Door Opener?

A garage door opener houses the motor that powers the door to open or close. It is controlled by a button on the wall, a garage door remote, or a keyless entry pad.

Garage Door Opener Parts

  • Lights
  • Rails and Carriages
  • Motors
  • Gears
  • Limit switches
  • Receivers
  • Garage door remotes or keychain remotes
  • Wall controllers
  • Keyless entry pads
  • Infra-red safety sensors


Most garage door openers come with a light. Lights are garage opener parts that work automatically when the door is signaled to operate. The lights also stay on for a short period of time after the door is in operation.

Rails and Carriages

Rails are garage opener parts that extend from the opener to the garage door. A carriage on the rail slides back and forth along the rail to engage the lifting and lowering of the garage door.

Motors and Gears

An electric motor is plugged into an outlet to power gears in the garage door opener. The gears turn in a clockwise direction to raise the garage door and counterclockwise to lower the door.

Limit Switches

Limit switches stop the door when it's finished going up or down.

Receivers, Remotes, and Keyless Entry Pads

Receivers are garage opener parts that are present with a wireless system. These parts allow you to control the garage door opener with remotes or a keyless entry pad.

Wall Controller

The wall controller operates the movement of the garage door by being wired to your household electrical system.

Infra-red Sensors

These garage opener parts are placed near the base of the garage door jamb. The infra-red sensors register an object when it is in the way of the closing door. They stop and reverse the door before it can hit the obstruction.