Door Viewer

A door viewer, also known as a peephole, is a small device installed on doors to allow individuals to see who is outside without opening the door. It typically consists of a small lens or fisheye lens that provides a wide-angle view of the outside area, and a housing unit that is fitted onto the door. Door viewers come in different styles, sizes, and materials, and can be easily installed on different types of doors, including wooden, metal, or fiberglass. They are commonly used in residential and commercial buildings as a security measure to prevent unwanted visitors and intruders from entering the premises.