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A door closer is a mechanical device that regulates the speed and action of a door’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]
Electric strikes are generally available in two configurations: Fail-secure.Also called fail-locked or non-fail safe. In this configuration, applying electric current to the strike will cause it to unlock.
Wall-mounted electromagnetic door holder securing a door in the open position. An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.
A doorstop (applied) may also be a small bracket or 90-degree piece of metal applied to the frame of a door to stop the door from swinging (bi-directional) and converting that door to a single direction (in-swing push or out-swing pull). The doorstop can be a separate part or integrated with a hinge or door closer.
Blower door tests are used by building researchers, weatherization crews, home performance contractors, home energy auditors, and others in efforts to assess the construction quality of the building envelope, locate air leakage pathways, assess how much ventilation is supplied by the air leakage, assess the energy losses resulting from that air ...
The station was handed over to Royal Malaysian Air Force in 1961. During the height of the Emergency, the single runway had the highest number of aircraft movements in the world. The station was situated about 3 miles from the town with its own swimming pool and cinema. It is commonly known to the locals as Sungai Besi Air Force Base.
The Closer is an American police procedural television series starring Kyra Sedgwick as Brenda Leigh Johnson, a Los Angeles Police Department deputy chief.A CIA-trained interrogator originally from Atlanta, Georgia, Brenda has a reputation as a closer—an interrogator who not only solves a case, but also obtains confessions that lead to convictions, thus "closing" the case.