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BRK Hardwired (with Battery Back-Up) Ionization Interconnected Smoke detector 6 -Pack

First Alert BRK Hardwired (with Battery Back-Up) Ionization Interconnected Smoke detector 6 -Pack

4.6
1726
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165 Questions
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How often do you have to change the battery?


Why does it come with a 10 year battery (or is it just in the First Alert smoke detector)? You recommend changing the battery every six months! 10 year life 9-volt batteries are more expensive. Why change them every six months??

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Thank you for reaching out. We recommend replacing the batteries for your detector once a year.

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