A door handle is a mechanical device used to open or close a door. It typically consists of a lever or knob that is attached to a door and allows a person to grasp it easily. When turned or pulled, the handle operates a latch or bolt, enabling the door to move. Door handles come in various designs, materials, and finishes, catering to different styles and functions. There are two main types of door handles: lever handles and knobs. Lever handles are often easier to use, especially for individuals with limited hand strength, while knobs provide a more traditional look. Both types can be found in residential and commercial settings.