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Frequently Asked Questions
What causes carbon monoxide? What are some common sources of carbon monoxide?
What is carbon monoxide?
Is carbon monoxide heavier than air? What is the diffusion of carbon monoxide in air?
What are the symptoms of carbon monoxide poisoning?
Why is carbon monoxide dangerous? What is the cause of carbon monoxide poisoning?
What does "Move to Fresh Air" printed on my carbon monoxide alarm mean?
What should I do when the carbon monoxide alarm sounds?
Why didn't the emergency responder find CO gas after an alarm?
Will carbon monoxide alarms detect explosive gas leaks?
What it the typical carbon monoxide detector life? How long will a CO alarm last?
Where should I install carbon monoxide detectors? What is proper carbon monoxide detector placement?
Is there anywhere I shouldn't install carbon monoxide detectors?
Does First Alert® make an RV carbon monoxide detector?
How many carbon monoxide detectors should I have in my home?
Where can I buy a replacement carbon monoxide detector SensorPack Module?
Can I unplug the CO alarm to silence or reset it, or do I need to leave it plugged in?
What is the proper way to do a carbon monoxide detector test?
Can I do a CO alarm test in any other way besides pressing the test button?
Can I remove the battery from the CO alarm to silence or reset it?
What does the SERVICE light mean on the FCD3 and SC01 carbon monoxide alarm units?
In the First Alert® carbon monoxide detectors - is there an audible and visual warning for carbon monoxide presence?
What is the expected carbon monoxide alarm battery life?
Has there ever been a First Alert® carbon monoxide alarm recall?
Should I leave my carbon monoxide (CO) alarm plugged in all year?
How do I get my carbon monoxide alarm to stop chirping?
Why is the green power light flashing on my First Alert® plug-in carbon monoxide detector?
Can you reset a plug-in CO alarm with the test/silence button?
Where should I install carbon monoxide detectors and in particular, how high off the floor?
What are unsafe levels of carbon monoxide?
Is it a false alarm when my CO alarm sounds when there doesn't seem to be a problem?
My CO400 or CO605 alarm will not work and I just installed a new battery. Why?
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