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Sikorsky Aircraft and Boeing are jointly producing a medium-lift-sized demonstrator they named SB>1 Defiant [3] [4] (also widely known as "SB-1") [5] [6] for phase one of the program. Originally planned to fly in late 2017, its first flight was delayed in April 2017 to early 2018. [7]
Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded. Electronic locks can also be remotely monitored and ...
Pressing a button on the key unlocks all of the car doors. Another button locks the car. In 1980, Ford Motor Company introduced an external keypad-type keyless entry system, wherein the driver entered a numeric combination —either pre-programmed at the factory or one programmed by the owner— to unlock the car without the key.
Mechanical keycard locks employ detainers which must be arranged in pre-selected positions by the key before the bolt will move. This was a mechanical type of lock operated by a plastic key card with a pattern of holes. There were 32 positions for possible hole locations, giving approximately 4.3 billion different keys.
Digital reset or digitally reset may refer to: Digital reset (computing), the reset of a digital computer; Digital reset (electronics), a cleared latch-state in electronics; Digital reset (typesetting), a digitally prepared typeset for publication either from a previous digital typeset or a complete rework of a work previously published with ...
The electronic key is used to unlock the lock. The electronic key needs to set the unlocking authority through the software. The authority includes the specific user, the unlocking date and time period, and the list of locks that can be unlocked. Otherwise, the lock cannot be unlocked.
The principle behind an electromagnetic lock is the use of electromagnetism to lock a door when energized. The holding force should be collinear with the load, and the lock and armature plate should be face-to-face to achieve optimal operation.
This is a trapped-key interlock on the door of an electrical switchgear cabinet. It is attached with one-way security screws to discourage casual removal, which would defeat the interlock scheme. Trapped-key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped-key interlocks ...