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Door and window sensors are also implemented in most home security systems. One part of the system is installed on the door or window itself while the other part is installed on the frame of the door or window. The two part system connects securely when a door or window is closed, creating a security circuit. [5]
Some alarm systems serve a single purpose of burglary protection; combination systems provide fire and intrusion protection. Intrusion-alarm systems are combined with closed-circuit television surveillance (CCTV) systems to record intruders' activities and interface to access control systems for electrically locked doors. There are many types ...
Also called fail-open. In this configuration, applying electric current to the strike will cause it to lock. It operates the same as a magnetic lock would. If there is a power failure, the door opens merely by being pushed or pulled. A new trend is a strike that is quickly reversible from fail safe to fail secure (and back again if needed).
Blane David Nordahl (born April 19, 1962) is an American cat burglar, who was given the nickname "Burglar to the Stars" after his exploits at the homes of individuals such as Ivana Trump, Steven Spielberg, Curt Gowdy and Bruce Springsteen.
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To actually open the steel-edged door required 7 strikes of 100 lb pressure [force]." Most door manufactures offer a number of different types of doors with varying levels of strength. Consumer Reports Magazine also reported in its test results that door frames often split with little force applied and lower quality deadbolts simply failed when ...