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Smoke Alarm confusion - Help please

  • 02-01-2023 12:04am
    #1
    manofthefora
    Registered Users, Registered Users 2 Posts: 154 ✭✭


    I have smoke alarms in my house. They live happily until there's smoke or a dead battery. Simple devices, I thought. They bleat when the battery needs to be replaced. A simple plastic back-plate onto which is mounted the alarm unit.

    My neighbour lives alone and asked for my help to change the battery in their smoke alarm. It was bleating!!

    I stood on the ladder and unscrewed the alarm unit from the ceiling mounted backplate. It did indeed have a (dead) 9v battery in it BUT also had a multi-pin connection to a wire that headed off into the ceiling!! What is that all about? I am out of my depth.

    Help please.

    MOTF



Comments

  • #2
    10-10-20
    Registered Users, Registered Users 2 Posts: 8,071 ✭✭✭10-10-20


    It's probably an interlinked system where the smokes are connected so that in the event that one detects smoke that they all sound together.



  • #3
    Doop
    Registered Users, Registered Users 2 Posts: 1,479 ✭✭✭Doop


    As above they may be interlinked but this really means they are hardwired (for power) the battery is just a back up in case of power failure. Hard wired alarms are the standard now a days.



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