You could use lithium battery powered glass/shock detectors if you had to...but wood/metal mullions in the windows makes any of those kinda gbs pretty iffy. Go with acoustic gbs as was discussed in a branch of this thread.
| >> > There's a picture of one installed here: | >> >
formatting link
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| >> Eeewwww! | >> js | >
| > I didn't realize those were even still available. I guess the | > manufacturers | > sold them off to the internet resellers, because I don't any pros that | > would | > still use them with a clear conscience. Note to the original poster, don't | > use these unless you enjoy visits from your local PD on a regular basis. | >
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