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Title: WARNING - THIS PRODUCT IS DESIGNED TO SELF DESTRUCT, AND BUY STOCK IN DURACELL WHILE YOU'RE AT IT
Review: I don't believe I've ever purchased a product before that is blatantly built to self destruct after a fixed time.They call it a FEATURE which essentially turns the product into landfill after 7 years.I quote from page 5 of the user manual:"After seven (7) years of cumulative power up, this unit will 'chirp' every 30 seconds. This is an 'operational end of life' feature which will indicate that it is time to replace the alarm"Kidde - ARE YOU KIDDING ME???2011-01-07: UPDATE. Purchased 10 of these to install in apartments. Installed 6 so far. Within 1/2 month, two of them started giving "Battery low" warnings - that's a 33% failure rate. Now I've got to figure out how to return these pieces of junk.
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