Editing Security alarm (section)

{{short description|System that detects unauthorised entry}}
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[[File:Honeywell home alarm.JPG|thumb|right|Wireless home alarm system control panel]]
[[File:ALARMA.jpg|thumbnail|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. Security alarms protect against [[burglary]] ([[theft]]) or [[property damage]], as well as against intruders. Examples include personal systems, neighborhood security alerts, [[car alarm]]s, and [[prison]] alarms.

Some alarm systems serve a single purpose of burglary protection; combination systems provide [[Fire alarm system|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 of security systems. Homeowners typically have small, self-contained noisemakers. These devices can also be complicated, multirole systems with [[computer and network surveillance|computer monitoring]] and control. It may even include a two-way voice which allows communication between the panel and monitoring station.