expect them to last shorter than that. But they do save you a lot of trouble replacing batteries.
10 year alarms don't really last 10 years...
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這種好像不可replace電池,到期,就全丟了。約39元。
-lovecat08-
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09/08/2024 postreply
04:27:05
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in some state the replaceable battery alarms are no longer
-borisg-
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09/08/2024 postreply
04:42:45
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好像都規定得安在天花板。。。。。。。。
-lovecat08-
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09/08/2024 postreply
04:49:36
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I think it has to be on the ceiling or on the wall but
-borisg-
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09/08/2024 postreply
05:13:22