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Review title: Annoying sharp beep and low battery warning, can't open it
Product review: Those of you who are happy with this product, just wait till you get this awful sharp beep and 'low battery' warning every few minutes. I tried to twist it as directed but couldn't open it. I had to pry it open! And where is the battery? Where am I supposed to find a battery in the middle of the night? Who designed this piece of junk?
