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BRK Electronics Smoke Alarm 4120B


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  • Posted by gehlings on Nov 8th, 2009 at 8:58pm

    Replacement for 4120b
    One of our detectors needs to be replaced, where do we get a new one?
  • Posted by aacod1 on Nov 1st, 2009 at 9:02am

    smoke alarm
    smoke alarm beeps every minute or so it is hard wired what is wrong with it and how do I repair it
  • Posted by janjan22 on May 30th, 2009 at 12:30am

    brk smoke alarm 4120b
    all the alarms going off at once with no smoke
  • Posted by jveigl on May 26th, 2009 at 6:49pm

    Alarm going off for no reason
    The alarm went off several times in the night with no apparent smoke or fire. What could be causing this and what do you suggest that we do
  • Posted by trudi77 on Mar 29th, 2009 at 12:50am

    constant alarm sound!
    one nite the 6 smoke alarms in the house went off with a loud alarm sound, scared my 89 year mother so much!
    I had to disconnect them all and have tried connecting them again but they continue to make the loud alarm sound. what do I need to do? please help
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