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Burglar alarms

Burglar alarm systems are an essential for every business or store, and even required in certain residential areas. There are many different types of burglar alarm systems available. These can range from cheap DIY kits as well as full-fledged complex systems. However, even these systems are based on simple principles. Most systems will consist of a control panel, various motion detectors and some kind of alarm sounder that is activated when motion is detected.