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Works well, extremely loud.
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Works perfect
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Works perfect going to buy some more
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Works wonders on my windows that are very old!
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Works great to scare away people who open your door without knocking on alarm mode
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Works perfect
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Works great for my wife's store to let her know customers are coming in.
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Works well needed a small easy to use devise and this is it.
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Works great, comes with mounting hardware, and easy to remove if needed
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Works perfect
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Works perfect
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Works great, alarm is loud will wake you up.
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Works great, Well made, Would buy again.