Any burglar alarm’s purpose is to notify any business- or home-owner of a potential danger, namely intruders. They may not be perfect in all circumstances; however, they can be excellent deterrents and systems providing first-response. Burglar alarms also referred to as intrusion detectors, perimeter detectors, or perimeter security systems. No matter what you decide to call them, they all serve the same purpose; they alert and deter any unwanted or threatening individuals.
The number and types of burglar alarm systems available on the market today are many. For indoor burglar alarms, you can choose between passive infrared detectors, glass-break detectors, microwave detectors, ultrasonic detectors, and photoelectric beams. Each of these types has its own primary method of detection, as well as purpose, when being installed in your home as part of a burglar alarm system.
Most people installing a burglar alarm in their home with opt for a passive infrared detector. The reason it bears the name “passive” is simply that this type of unit doesn’t radiate any type of energy.