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2. Heat detector - Wikipedia

   en.wikipedia.org/wiki/Heat_detector

   A heat detector is a fire alarm device designed to respond when the convected thermal energy of a fire increases the temperature of a heat sensitive element. The thermal mass and conductivity of the element regulate the rate flow of heat into the element. All heat detectors have this thermal lag. Heat detectors have two main classifications of ...

3. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_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. 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.

4. Fire alarm control panel - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_control_panel

   A fire alarm control panel ( FACP ), fire alarm control unit ( FACU ), fire indicator panel ( FIP ), or simply fire alarm panel is the controlling component of a fire alarm system. The panel receives information from devices designed to detect and report fires, monitors their operational integrity, and provides for automatic control of ...

5. Constant false alarm rate - Wikipedia

   en.wikipedia.org/wiki/Constant_false_alarm_rate

   Constant False Alarm Rate (CFAR). The center is the cell under test. The two adjacent cells are added and multiplied by a constant to establish a threshold. Detection occurs when the cell under test exceeds the threshold. In most simple CFAR detection schemes, the threshold level is calculated by estimating the noise floor level around the cell ...

6. Home Guard (Sweden) - Wikipedia

   en.wikipedia.org/wiki/Home_Guard_(Sweden)

   Home Guard (Sweden) Coat of arms of the Home Guard – National Security Forces. The Home Guard – National Security Forces ( Swedish: Hemvärnet – Nationella skyddsstyrkorna) is a military reserve force of the Swedish Armed Forces. It was formally established on May 29, 1940, during World War II upon popular demand. [3]

7. Home guard - Wikipedia

   en.wikipedia.org/wiki/Home_guard

   Home guard is a title given to various military organizations at various times, with the implication of an emergency or reserve force raised for local defense. The term "home guard" was first officially used in the American Civil War, starting with units formed by German immigrants in Missouri, and may derive from possible historical use of the ...