This teardown is not a repair guide. To repair your First alert smoke and carbon monoxide alarm, use our service manual.

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  • Insert wisdom here.

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You're going to want to get a flat head screwdriver and pry open the clip on the inside to get to the inner part of the alarm.
  • You're going to want to get a flat head screwdriver and pry open the clip on the inside to get to the inner part of the alarm.

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After the last step  you can now see the inside.
  • After the last step you can now see the inside.

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Now what you should do is pop a small screwdriver into the rivet hole to unlock the battery holder. Now what you should do is pop a small screwdriver into the rivet hole to unlock the battery holder.
  • Now what you should do is pop a small screwdriver into the rivet hole to unlock the battery holder.

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Now with the  the battery back area being popped out you can safely take out the ringer and the mother board of the smoke detector.
  • Now with the the battery back area being popped out you can safely take out the ringer and the mother board of the smoke detector.

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  • Electricity works in a smoke detector by detecting smoke via a air filtration tank and when it detects the smoke it send a electric signal to a air horn to beep every 3-5 seconds.

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Justin Lyons

Member since: 21-04-2018

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