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Alarm System FAQs

What are the most popular indoor alarm systems?

Passive infrared systems are the most common for households and small businesses because they are affordable and reliable.  These kind of systems monitor the temperature of the locations they are set up in.  When an unexpected heat change occurs, which could be caused by an object or a person, the alarm sounds. 

Ultrasonic systems use frequencies that transmit sound waves that cannot be heard by humans.  When an object enters the room it will be detected by a break in the sound waves.  This method is not used often because sudden shifts in wind or air pressure can set off the alarm. 

Microwave systems emit microwaves and can detect movement because the rays are reflected off objects.  Usually these systems are paired with infrared systems so false alarms are not common.  These are the most common systems used for larger businesses

What are the most popular outdoor alarm systems?

Vibration systems are mounted on barriers like fences, gates or even trees and can detect movement of structures.  When movement occurs the alarm will sound.  The system can be set to different intensity levels so the wind or a small animal will not set off the alarm. 

Passive magnetic systems are buried in the ground and create an electromagnetic field with wires running the perimeter of your property.  They can sense movement on the ground above them and sound an alarm when the movement is vast.

 An E-field alarm system can be installed on the perimeter of fences and walls or even poles.  An array of indicators are used and they create an electromagnetic field between them.  If the amplitude, and rate of the frequencies change for a set period of time the alarm will assume that there is an intrusive object in the area and an alarm will sound.

What are the different types of fire alarm systems?

There are two types of fire alarms; automatic and manually activated.  Automatic systems are used to sense and notify individuals to evacuate from a building in the event of a fire, as well as to summon emergency service.  Manually activated systems are used by individuals who are wishing to notify an entire building when they see a fire, these systems also summon emergency services.  Manually activated devices; Break glass stations, Buttons and manual pull station are constructed to be readily located (near the exits), identified, and operated.  Automatic systems are the most popular and usually only businesses or large buildings have manually activated systems.  Automatically activated devices can take many forms intended to respond to any number of detectable physical changes associated with fire: confected thermal energy; heat detector, products of combustion; smoke detector, radiant energy; flame detector, combustion gasses; carbon monoxide detector and release of extinguishing agents; water-flow detector. The newest innovations can use cameras and computer algorithms to analyze the visible effects of fire and movement inapplications inappropriate for or hostile to other detection methods.

 

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