A security alarm is a system designed to detect intrusion, such as unauthorized entry, into a building or other areas such as a home or school.

What is meaning of intruder alarm system?

Intruder/burglar alarm system is a set of interconnected devices that is aimed to protect an object, usually a facility, against intruders and to notify the owner or/and the monitoring station/center of any violation of the protected zones.

How does intruder alarm system work?

How do burglar alarms work? Burglar alarm systems work by sounding an alarm when movement is sensed inside your home while the alarm is set and active. These systems contain lots of sensors that can detect motion, alerting you or your neighbours to a potential intruder.