Title: Only good if you sleep next to it
Product review: The are not loud at all. Probably 70db at 10 feet If you have a 2 story house you will not hear them at all if they do go off while you are sleeping. Out of the 3 I purchased one failed while contacting the water in a small flood. Luckily I had another backup unit set up in the adjacent room that did manage to keep working until I woke up in the morning to hear the faint beeping. Zircon charges $5 dollars return shipping charge plus postage to ship it to them for any failed unit.
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