I've seen something that sounds like what you are describing. Had the fellow come to the house for a demo. We have a Lantana and the location of the master bedroom had some impact on the functionality of the device. Had to keep the master bedroom door closed all night....and that in itself was a problem. I get up during the night...sometimes for a glass of milk, take a Tylenol, etc.
If you are considering such a system, make sure you can try it out, determine limitations.
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