Article by Onweb Media Microwave detector alarms are special types of home alarm systems which emit microwaves from a transmitter and helps in detecting any of the microwaves which are reflected or for that matter reduction of the intensity of the beam that uses a receiver. The receiver as well as transmitter is generally combined with the help of a mono static or single housing application (for indoors) or a bistatic or separate housing application (for outdoors). The transmitter as well as receiver is generally combined for reducing false alarms. The detector is combined with the help of passive infra red or dualtec alarms. The energy is generated in the microwave region of the electro magnetic spectrum which allows the detector to be operated in the form of an active volumetric device which responds to: a frequency change in the Doppler shift or a shift in the frequency phase and finally as a motion that reduces the amount of energy received. Photo electric beams are special types of home security systems or alarms which detect if an intruder is present by generating infra red light beams in an area where they might be obstructed. The detection surface area is expanded by employing them in doubly arranged stacks. The technology helps effectively detect long range presences and if correctly installed with a high frequency, a fence like barrier might be created. The systems are available for internal as well as external detections. Glass break detectors are used within the internal perimeter of the building for purposes of protecting it from external intrusion. A breaking glass generates different kinds of frequencies and this is the reason as to why the range of types can vary between the infrasonic to the audio band. The latter is audible to the human ear, while the former is not. Acoustic detectors may be mounted in proximity to the suspected place of intrusion so that when there is a breakage of the glass, specific types of shock frequencies are generated for traveling through the glass, including the ceiling and window frame. Smoke, carbon monoxide and heat detectors are a type of alarm or home security system that are also known as round the clock hour zones as these are effective all through the day. These systems are installed for ensuring risk free protection from fire as well as carbon monoxide for ensuring the safety of your home and near and dear ones. ...read more

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