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Title: First Alert one link SCO5O1CN-3ST
Review: Bought 7 of these interconnected wireless battery operated smoke/carbon mon. for a 5 unit older apartment house.5 installed 1 in ea. apt. and 1 in hallway and 1 in basement , programed all at 1 time together, installed all 7 , testedand all worked wery well. For a non hardwired smoke/carbon mon. detector they save a lot of money by being wireless.Programing was easy and the unit will tell you when the batterys need to be changed.
