It can't be in direct contact with moisture.
I have one with a problem which X10 has been
extremely great about taking care of. If I
remember correctly it doesn't have a
repeated pattern and it does play for a
sufficient amount of time. Also, it is just
the greatest thing in the world if you like
playing jokes on people such as putting it
inside of a cabinet and once someone opens
the cabinet it goes off via the motion
detector that you have also put in the
cabinet. Be creative. Not that I have done
this though...I am a NICE guy. hahaha
