Window Bugs

["Dan" <dan@xxxxxxxxxxxxxx>]

I just moved into a fairly new home where the Alarm System was not
completely installed. I finished the door contacts and Motion Sensors and
then found a box containing Window Bug glass break sensors. I am looking for
assistance on where to mount these devices. Some say on the windows
themselves, others have said on the window frame as it detects the audio
frequency of breaking glass within 10 feet of it.  What is the best
solution?

Thanks, Dan