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So on this particular wall in my apartment I have two fire detectors (one that's plugged in but seems to have some sort of internal battery and one that takes 9V batteries), a thermostat and... this:

enter image description here

Any idea as to what it is? Carbon Monoxide detector? Something else?

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"But where is the button?" –  ppumkin Apr 5 '13 at 14:33
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Does it go ding dong? –  staticx Apr 8 '13 at 18:38
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1 Answer

up vote 10 down vote accepted

It looks like a doorbell to me. Can't be sure though unless you pop off the case, which should come off fairly easily if you pull it straight out from the wall.

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I vote doorbell also. I'll double down and say it's a Newtone. lol. –  shirlock homes Apr 5 '13 at 13:16
    
@shirlockhomes - Its NuTone –  Freiheit Apr 5 '13 at 15:57
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We don't do no fancy spelling here. We spell words likes they sounds! –  The Evil Greebo Apr 5 '13 at 17:36
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