A garage door opener is an electric device that automatically opens and closes a garage door. It typically consists of a motor, a remote control, and a system of pulleys and tracks. When activated, the opener moves the door up or down, providing convenient access to the garage without needing to manually lift the heavy door. Most garage door openers use either a chain drive, belt drive, or screw drive mechanism. They can be operated using a remote control, a wall-mounted switch, or even a smartphone app. Many modern openers also include safety features, such as automatic reversal if an object is detected in the door's path.