I learned a lot about home security when I worked as a maid to pay for college. There were a lot of great homes that I cleaned on a weekly basis, and most of them had some sort of alarm system. There were many great houses in great neighborhoods, but there were also some really nice ones hidden in not so nice neighborhoods. You would often never know it from the outside, but some of the houses in the bad neighborhoods were nicer than the obvious ones. One thing I noticed a lot of were window alarms.
We were often warned not to open any windows while in a house because you never knew if they had window alarms installed. In most cases, they were silent alarms, but some of them would sound off rather loudly. I know this because some of my coworkers would open the windows despite the warning from the supervisor. In many cases, you could actually tell there were window alarms, but there were some instances when you could not see them at all. That is why you never took the chance unless the homeowner told you otherwise.
If you want window alarms in your home, you might want to think it over first. Remember that once you have these installed you run the risk of someone in your home setting off your alarm system. You might not need to have them on the second floor windows, but quite honestly, if you are worried enough to get window alarms, you may want to get them on every single window in your home. Just make sure your family knows what to do, and that you tell those who come into your home about the alarms. You dont want to set off a lot of false alarms, though most alarm companies are used to it happening.
You may be offered window alarms when you put in your alarm system, or you may decide at a later date that you would like to add them. Never hesitate to add to your security system if you feel that this is something that you need to do. You need to feel safe in your own home, and if that means that you have to add window alarms to your system then you should by all means do so. They say you cannot put a price on security, but spending a little more money might be just what you need to do.