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OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
The electric immobiliser/alarm system was invented by St. George Evans and Edward Birkenbuel and patented in 1919. [2] They developed a 3x3 grid of double-contact switches on a panel mounted inside the car so when the ignition switch was activated, current from the battery (or magneto) went to the spark plugs allowing the engine to start, or immobilizing the vehicle and sounding the horn. [3]
The signal was turned off if the block were not "clear"; no current passed through the coherer and a relay turned a white or green light in the cab to red and applied the brakes. [5] The London & South Western Railway installed the system on its Hampton Court branch line in 1911, but shortly after removed it when the line was electrified. [6]
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Starting with VSS 2005, Microsoft added a client–server mode. In this mode, clients do not need write access to a SMB share where they can potentially damage the SS database. Instead, files must be accessed through the VSS client tools - the VSS windows client, the VSS command-line tool , or some application that integrates with or emulates ...
Wireless home alarm system control panel A house alarm. A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school.
Vehicle speed sensor, in automobiles; Verifiable secret sharing, a cryptographic primitive; Video surveillance system, cameras and other systems combined together to allow remote video monitoring; Visual SourceSafe, a source control software system produced by Microsoft; Vital signs stable, in List of medical abbreviations: V
An early version of a car alarm for use as a theft deterrent was invented by an unknown prisoner from Denver in 1913. [1] This version was manually armed, and triggered when someone tried to crank the engine. A later alarm inspired by an early version of a remote starter was published in 1916. [2]