Shufro Security offers all of the industry's glass breakage detectors. Some of these items include:

The window contact vibration units are small sensors which are attached to each window. When any window is hit hard or broken, it causes the alarm to go off. It's that simple.
Ultra Sensitive audio glass breakage detection microphones listen for the sound of broken glass. There are many styles with differing processing and coverage, but it is possible to cover a 30 foot radius within a home with one unit.
For a different touch, we offer a wired window screen. These are great if you like to leave windows or sliding doors open alot. A tear in the screening material will trigger the alarm instantly. A definite plus for those who love fresh air all of the time and sleep with their windows open. If you design them wireless then they are real easy to take out.