Replacing mains wired smoke alarms

Discussion in 'Electrical' started by Matt_C, Jan 22, 2019.

  1. Matt_C


    Jan 22, 2019
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    Hi, first time poster.

    I've had to replace one of the three mains wired smoke detectors in our house which have been in since it was built, about 12 years ago.

    Obviously the replacement is a different model to what was there.

    When I put the power back on the other 2 detectors go off and the only way to stop them is to turn the power off or detach the replacement alarm.

    Is there some way of resetting the old 2 or should I replace all 3 at the same time or is there something else obvious I'm missing?

    Cheers for any pointers
    Matt_C, Jan 22, 2019
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  2. Matt_C


    Nov 13, 2018
    Likes Received:
    Warrenton, North Carolina USA
    Welcome To The Forum Matt. Replace all 3 with the new model. It’s your family’s safety you’re dealing with here. The advances in electronics in the last decade make it a sound investment as well as the active element in the detector degrades over time.
    Silentrunning, Jan 22, 2019
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