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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
Does it go ding dong? – Brian Apr 8 '13 at 18:38
up vote 11 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
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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