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Hi,

We have a Kiddie KN-COSM-1B smoke detector. Of the past few months
since the basement rebuild we have slowly been replacing our old
hardwired alarms with the Kiddie models. The Kiddie model has CO/Smoke
detector built in. They are apporximately $50 at HD each.

Today I went to replace the third smoke alarm near the attic room,
when all the alarms went off. I removed the new alarm, but could not
get it to stop beeping and saying "Fire, Fire." I can only shut it up
by taking the battery up. When I put the battery back in it continues
to beep. At this point it is not connected to any AC, just the
battery. This happens will all 3 of the Kiddie alarms. The last
remaining regular AC alarm is not beeping or making any noise.

Would could be wrong, how can I shut the alarms up and put them back?
The batteries are new, as are the detectors.

Thanks!


Two things to try. First make sure that your power connections are good and
tight. Twist the wires together with pliers before twisting on the wire
connectors. Second, with the smoke detector disconnected from the power
source, remove the battery. Push and hold the test button for about 30
seconds. Try this with all of them.

The smoke alarms must be compatible with one another. They should all be
the same make and model.