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A comment on Nest introduces their Smoke Detector. Parent comment

Re:Nest introduces their Smoke Detector by ballard on Wednesday October 09, 2013 @04:53AM (#6520113)
Why waste so many batteries? Ultralife last a lot longer ($4.50 bulk price / 8 years) per cost than alkaline ($1.50 bulk price / 1 year) and are less work.
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