Negative Positive
Title: Needs replacement in 7 months.
Review: Bought this alarm in spring 2007. Manufacture date printed on back says 2007 Feb 07. Have had two sets of batteries in it in the time we owned it and recently it started beeping three "chirps" per minute. Checked the back and that means replace alarm... already?Plugs into the wall, yet will not work without the batteries. Overall pretty disappointed. Previously used a NightHawk carbon monoxide detector. Nearly the same price and nice digital readout. Works off outlet. Unfortunately can't find that quality and price now that CO detectors are required by local code.
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