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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. Security alarms protect against burglary (theft) or property damage, as well as against intruders. Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms.
A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications. PIR sensors detect general movement, but do not give ...
April 25, 1820. West Boylston, Massachusetts, US. Died. 1901. Nationality. American. Known for. Burglar alarm. Edwin Holmes (April 25, 1820 – 1901) [1][2] was an American businessman who is credited with inventing, commercializing the electromagnetic burglar alarm and with establishing the first burglar alarm networks.
Police in Seattle will no longer be dispatched to burglary alarms based solely on sensors or motion activators beginning next week in a move that is catching many security system companies off ...
An alarm-industry lobbying group estimates that 1.5 million customers still need to upgrade their fire or burglar alarms, while about half a million have medical alert devices that run on 3G; it ...
Home security. Home security includes both the security hardware placed on a property and individuals' personal security practices. Security hardware includes doors, locks, alarm systems, lighting, motion detectors, and security camera systems. Personal security involves practices like ensuring doors are locked, alarms are activated, owning a ...
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