Negative Positive
Title: Not good
Review: Cheap, made in Mexico. I bought two 3-packs about a year ago from Costco. Now that it's a year later, and I'm putting up the xmas tree, I thought I would *really* test the alarm that is in the family room with the tree. So after putting in a new battery and making sure that it wasn't in "silent" mode (which is a convenient feature for problem locations, such as a kitchen where the alarm goes off all the time), I held the unit about 5 inches above a burning candle. Nothing. So I blew the candle out. Lots of smoke, no alarm. Hmmm....So this made me want to test the other units in the house. Of the six, three were unable to pick up the candle smoke. Not good. Don't buy these. There should be a recall.
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