Look what I found at my local dollar stor.

OK, the package was $3.99 but you get three and they come with batteries.

They are really loud like a personal alarm.

They are 1.1" wide but if you open them up you can see that it would be easy to remove the reed switch (magnetically operated) then it would be about 0.8" wide.

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__________________
"I'm a sandman. I've never killed anyone. I terminate runners when their time is up." Logan from "Logan's Run"

http://sandmandecals.com/

Okay.....but which dollar store........Dollar Tree?

Don
NAR 53455

Actually it's not any kind of chain store.

Just a tiny little mom and pop store that opened about 6 months ago in my town.

Tiny...teeny tiny...less than 600 sq. ft.!

__________________
"I'm a sandman. I've never killed anyone. I terminate runners when their time is up." Logan from "Logan's Run"

http://sandmandecals.com/