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There are several installation systems, the most traditional being a system known as 4 + 1, named for the types of wiring that it requires. A 4 + 1 system requires four wires that handle power, communication, and the door system, and another wire for communication between an in-unit apartment resident and the person using the door phone.
In the case of the hotel room lock, there is no central system; the keycard and the lock function in the same tradition as a standard key and lock. However, if the card readers communicate with a central system, it is the system that unlocks the door, not the card reader alone. [3]
The growing field of access control and electronic entry systems has resulted in some fire doors being field modified without proper listing agency approval. Field modifications of fire listed assemblies must either be inspected by a listing agency representative, or the modification must be performed by personnel certified to perform such work.
A mantrap, security mantrap portal, airlock, sally port or access control vestibule is a physical security access control system comprising a small space with two sets of interlocking doors, such that the first set of doors must close before the second set opens.
Electronic access control systems provide secure access to buildings or facilities by controlling who can enter and exit. Some key aspects of these systems include: Access credentials - Access cards, fobs, or badges are used to identify and authenticate authorized users. Information encoded on the credentials is read by card readers at entry ...
A smart key is an electronic access and authorization system that is available either as standard equipment or an option in several car designs. It was developed by Siemens in 1995 and introduced by Mercedes-Benz under the name "Keyless-Go" in 1998 on the W220 S-Class , [ 1 ] after the design patent was filed by Daimler-Benz on May 17, 1997.
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