Wireless Motion Detector

If your home is not protected by an alarm system, or there are areas of your home that are not covered by by the system, you may want to solve that problem with the use of a wireless motion detector, or detectors.

Being wirefree, these detection devices can be placed virtually anywhere without the need to run wires. If your existing home security system is wireless, you can add compatible detectors to it, or if your system is hardwired, you can use these devices as supplemental protection.

Some motion sensors are manufactured to work only with specific systems, others are self contained and operate independently.

Movement is detected by a variety of methods all of which involve the measurement of change that takes place in the area covered by the detector. The most usual method of detection is the Passive Infra Red (PIR) system, if an intruder moves into the device's path the sensor detects the increase in infrared energy.

Most usually a wireless motion detector is fitted inside the home. Weatherproof detectors for outside use are available but most usually these are part of an overall security system.

The alarm of a self contained motion detector comprises of a siren, usually between 90 – 120 db. This is quite loud enough to alert you of an intruder if you are at home.

Wireless detectors that are designed for use with alarm systems, monitored security systems or dial up systems use the systems own siren. Some of these devices offer the option of a siren or chimes.

Why chimes?: because you don't always want a screaming siren. You may be using your motion detector as a visitor announcement system, rather than a burglar alarm, and a pleasant chime would be more appropriate.

If you are using the device to alert you of the movements of small children you would want the chime option. Also you will probably prefer to have your wireless motion detector set to chime when you are testing out the best location to fit it.

Some detectors only chime, they do not have a siren option. These devices are designed as visitor alerts and are often found in stores to give a heads up when a customer enters the store.

Although there are many home uses for a chime only motion detector, as a pool alarm for example, you may not want to use one if your main intention is to detect intruders. A single chime may not be enough to rouse you from sleep, you need the constant wail of a siren to do that.

Many detectors come with a key fob remote. This enables you to switch off your detector when you want to move around the area that it protects. Also available are wireless detectors that double as a portable alarm for those nights you spend away in a hotel or motel.

If you keep pets, you will want to fit Pet Immune motion detectors. These use one of two different methods to ignore the movement of your pets.

One type is designed to ignore any movement below a hight of around 16 inches, however if your cat or small dog is inclined to jump or climb they could trigger the alarm. The other type of pet immune detector ignores pets under around 60 lbs.

The efficiency of a wireless detector depends to some extent on being correctly positioned, it may take some experimenting to find the best place to fit the detector so that it covers the area that you need protecting.

A wireless motion detector can give you a vital warning of an intruder in your house, but should not be considered adequate home security. Use detectors as part of an overall home security system and plan.

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