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2. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms. Some alarm systems serve a single purpose of burglary protection; combination systems provide fire and intrusion protection.

3. Alarm device - Wikipedia

   en.wikipedia.org/wiki/Alarm_device

   safety alarms, which go off if a dangerous condition occurs. Common public safety alarms include: civil defense siren, also known as tornado sirens or air raid sirens; fire alarm systems. fire alarm notification appliance "Multiple-alarm fire", a locally specific measure of the severity of a fire and the fire-department reaction required. smoke ...

4. Physical security - Wikipedia

   en.wikipedia.org/wiki/Physical_security

   Alarms - Unauthorized access attempts or held/forced doors can trigger audible alarms and alerts. Integration with camera systems also occurs. Access levels - Software can limit access to specific users, groups, and times. For example, some employees may have 24/7 access to all areas while others are restricted.

5. The 7 Best Home Security Systems for the Money - AOL

   www.aol.com/7-best-home-security-systems...

   When you purchase the ADT Home Security System, you’re paying, first and foremost, for the name and reputation of this company that has provided security for over 140 years. ADT also has ...

6. Home security - Wikipedia

   en.wikipedia.org/wiki/Home_security

   A control panel is implemented to arm and disarm a home security system. The control panel is the main connection to the alarm company monitoring a home. It typically features a touchpad or buttons to easily maneuver the system, and some newer systems also feature voice control or wireless remotes (key fobs). [5]

7. Fire alarm system - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_system

   A fire alarm system is a building system designed to detect, alert occupants, ... Examples include pull stations, heat detectors, duct detectors, and smoke detectors.