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loud

use a piece of card board ( thin ) to put between the contacts of a smoke detector ( set in the ON position ) with string or wire attached, then attach the string/wire to anything you do not wont to move ( window screen ), especially if the glass window is left open most of the time as in the case of a window fan running at night. if that screen moves the wire moves the cardboard moves , and a screaming alarm goes off. can't help but hear it. hide the alarm behind the window curtan in some manner that it can't be seen from the outside. IT WORKS AND IT'S LOUD. MRBEAN50 ;)
 
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