http://www.theusermanualsite.com/ex/mfg/headline/m/brk_electronics/d/smokecarbon_monoxide_detector User submitted content regarding BRK Electronics Smoke/Carbon Monoxide Detector http://www.owneriq.net/images/sites/www.owneriq.net/logo_notag.gif http://www.owneriq.net 144 57 en-us Sun, 05 Oct 2008 10:06:38 -0400 240 http://homeappliance.manualsonline.com/ex/thread/view/idThread/337317?s=rss <em style="font-style: italic;">My smoke alarm started chirping loudly - once per minute which seems to signify a need for a new battery which I replaced. The detector continues to chirp once per minute anyway. In fact, the detector chirps even without a 9V in it which seems bizarre...?</em><br /><br /> <strong style="font-weight: bold;">Latest post, made on 2008-10-05 10:06:38</strong><br /> We've had the same problem over the last 4 years. I don't know how to fix it. We've tried replacing the battery with different brands. We've tried leaving the battery and power disconnected for weeks at a time. Nothing seems to reliably stop these things from chirping. I HATE these stupid BRK 4120SB 's. 337317#885848 Sun, 05 Oct 2008 10:06:38 -0400