Title: Broken out of the box
Product review: Bought one of these a week ago at Meijer. Opened it tonight and read and followed all the instructions. It failed the very first self-test - the unit only displays "Err". (The instructions helpfully suggest that this means the ambient temperature is not between 60 and 98 degrees F - I'm pretty sure the temperature in my house is in that range, Mabis.) Tried replacing the battery - no better. The unit is just junk.
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