Window alarms are an important & essential part of the electronic alarm coverage that is needed to effectively secure the perimeter of our homes. In today’s society each accessible entry point (window & door) needs to be secured with its own perimeter detection sensor.
There are a few different types of alarm sensors that are generally used to electronically secure the windows in residential properties. The perimeter detection device that is most widely used in a home for securing both the windows & doors are magnetic switch sensors.
There are basically two different models for this type of window alarm, as they can be surfaced mounted or recessed (hidden).
The configuration of the surfaced mounted model & how it is installed is very different from the recessed magnetic sensor, but they both work exactly the same.
A surface mounted magnetic sensor is housed in two small rectangular plastic casings, one holds a magnetically activated reed switch & the other one holds a magnet.
The magnet section of the sensor is mounted on the window & the switch part is attached directly adjacent to the magnet on the window frame.
When both sections of the sensor are adjacent to one another the window is fully closed & a magnetic field is applied between the switch & the magnet. The sensor is triggered once the window is opened, as this will remove the magnetic field which causes a break in the sensors electrical circuit.
There are two different types of glass break sensors that are also used as window alarms.
The first one is a glass break shock sensor that is applied directly to the glass it is protecting with a small suction device or a special type tape.
The shock sensor is triggered by vibrations which can be caused by the window being struck or being tampered with in any way. Most shock sensors today have various sensitivity settings that you can adjust.
Many homes have certain windows that are hidden from view due to a fence or other permanent structures on a property. A glass break shock sensor is a very effective window alarm for protecting these windows.
Any intruder approaching a window with a shock sensor see’s it attached to the inside glass & is immediately deterred from breaking in to both the window & the home.
The shock sensor not only lets the intruder know the window cannot be tampered with, as it also informs them the home is being electronically secured with a security alarm system.
While this window alarm can adequately secure any hidden windows you may have in your home, there are also two other security measures you can choose from that can also effectively secure such windows.
Both of these alternative measures can be found on my basement window security web page.
It is very important to provide any windows that may be hidden from view with a higher level of physical and/or electronic security.
The windows in a home that have the highest potential of being targeted by an intruder, are ones that cannot be seen from a neighbor’s home or a public area.
The second glass break detector is triggered by the acoustical sound wave of breaking glass. While it can depend on the specific layout of one’s home, a single detector strategically located can protect multiple windows within the sensors range.
While the manufacturers for these type of window alarms are coming out with newer & improved models all the time, many of these glass break sensors will repeatedly trigger false alarms in a troubling environment. They mistakenly identify certain high pitched sounds in a home for the acoustical sound of breaking glass.
If you find yourself experiencing such an issue with a glass break sensor in your own home, the following information provides a few different solutions that can help eliminate this false alarm problem.
The first step in addressing this security issue is to identify the specific sound(s) that is causing the sensor to trigger false alarms.
Once the sound(s) has been identified, there may be away to prevent it from reoccurring or it may be possible to move the source that emanates the sound outside of the sensors range.
The sounds that sensors mistakenly identify as the sound of breaking glass will almost always come from some type of family activity inside the home. If this is what is triggering the false alarms, the problem can be avoided by bypassing the security zone the glass break sensor is in whenever the home is occupied.
Although I do not recommend this solution if this is the only alarm sensor securing the windows in the detectors range. A glass break acoustical detector should only be used as an interior backup sensor.
All accessible windows in a home should be
protected with perimeter detection devices like a magnetic switch or glass
break shock sensors.
If neither of the above measures are an appropriate solution for your needs, the next & final solution should be considered. This next solution will certainly eliminate this false alarm problem, but unfortunately it will also cost you some money to implement.
You will need to replace your acoustical sensor window alarm with a glass break detector that uses dual technology. A dual technology glass break detector cost a little more than the basic acoustical sensors, but they were specifically produced to prevent false alarms from repeatedly happening in troubling environments.
Dual alarm detectors are designed to use two different technologies to trigger the sensor. With a dual technology glass break sensor, both technologies will need to be activated in a precise sequence, before an alarm condition can be triggered.
One of the technologies will detect the acoustical sound of breaking glass, while the other one will detect vibrations of low frequency sound pressure waves.
Low frequency compression waves are caused by the inward flex of a window just prior to it breaking. This is then followed by the acoustical sound of breaking glass.
This prevents certain high pitched sounds from causing false alarms, as without a compression wave first being detected, the acoustical sound of breaking glass alone will not trigger the sensor.
To provide the level of electronic security our homes & families need in today’s society, it is important secure all ground level windows & any on a higher level that can easily be reached with a perimeter detection sensor.
Wireless magnetic sensors for a quality alarm system will generally cost between $30 & $40 for each sensor. This can certainly increase the overall cost of an alarm system for anyone needing to electronically secure a dozen or so windows in their home.
To reduce the cost of setting up the wireless alarm coverage in a home, many monitoring companies & many who install their own systems will secure the ground level windows in a home with a couple of motion sensors.
Motion detectors are not window alarms, as they are an interior backup sensor only. If you use them as perimeter detection sensors they will significantly reduce the level of electronic security your home & family needs.
The only way a criminal can trigger a motion detector is by entering the sensors FOV (field of view), but this unfortunately cannot happen until after they are inside the home.
The electronic security for each accessible window becomes non-existent when the home is occupied, as the motion sensors securing these windows will need to be bypassed to prevent any family activity from triggering a false alarm.
The last thing you or a family member would ever want or need is to wake up in the middle of the night & find some deranged person in your bedroom.
If acquiring all the window alarms you need is not possible due to limited funds, you may want to consider building up the alarm coverage you require over time.
Taking a little longer to acquire the electronic security you need, is a much better option than it is to ineffectively secure your home’s perimeter with motion sensors.
If window alarms will need to be installed over time, you will first want to secure any windows you may have that are hidden from view.
As outlined above, windows that are hidden from view have the highest potential of being targeted by intruders.
I sincerely hope this window alarms web page was in some way helpful & beneficial for you. You may want to consider bookmarking this site as new & updated information is uploaded weekly.
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