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Switch — For other uses, see Switch (disambiguation). Electrical switches. Top, left to right: circuit breaker, mercury switch, wafer switch, DIP switch, surface mount switch, reed switch. Bottom, left to right: wall switch (U.S. style), miniature toggle… … Wikipedia
Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel … Wikipedia
Deadbolt — A deadbolt or deadlock, is a locking mechanism, providing more security than an ordinary key operated lock because the weight of the locking bar is usually sufficient to increase break in time to 10 or 15 minutes.Fact|date=June 2007Unlike most… … Wikipedia
Vending machine — A vending machine made in 1952. A Best Buy Express vending m … Wikipedia
Swing door operator — A swing door operator (or swing door opener or automatic swing door operator) is a device that operates a swing door for pedestrian use. It opens or helps open the door automatically, waits, then closes it. Types There are 3 basic types of swing… … Wikipedia

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