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Door chain. A door chain, security chain, or security door chain or chain door interviewer [1] consists of a small chain attached to the door frame, which attaches to a track on the door for security purposes. It is a type of lock that is often used along with other types of locks to secure a door. [2] They are commonly used on hotel and motel ...
In other words, stop it from closing shut, slightly or all the way—just like you might use a freestanding door stop for the same effect. The way to do it is easy; some even say embarrassingly so.
A doorstop (also door stopper, door stop or door wedge) is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. The same word is used to refer to a thin slat built inside a door frame to prevent a door from swinging through when closed.
Door viewers — small fish-eye lenses that allow residents to view outside without opening the door. Door windows — there are three common methods to add security to windows in or beside doors: security bars and grates, security films (coatings applied to the glass in windows to reinforce it), or breakage resistant windows (plexiglas, lexan ...
A vision panel is a small window in a door which allows people to look through without opening the door. Vision panels are sometimes in walls, generally adjacent to a door. These have implications in safety, primarily to avoid opening doors on a person coming the other way, but also in case of fire to avoid opening a door onto a fire.
1. a slot in a wall or door through which incoming post [DM] is delivered (US: mail slot, mailbox) 2. (less common) a box in the street for receiving outgoing letters and other mail (more usually called a postbox or pillar box) (US: mailbox) See also Letterbox (US & UK): a film display format taking its name from the shape of a letter-box slot
The initial layer of security for a campus, building, office, or other physical space can use crime prevention through environmental design to deter threats. Some of the most common examples are also the most basic: warning signs or window stickers, fences , vehicle barriers, vehicle height-restrictors, restricted access points, security ...
An electronic "do not disturb" indicator (the illuminated red lamp is a signal to hotel staff). Some hotels are using high-tech means to replace paper do not disturb signs that hang on the door. One example is a privacy button that one can press from within the room to light up an indicator outside the room. [7]