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Title: appear to work as advertised
Review: I have ordered and installed these alarms without a problem.Everything works as advertised. The alarms come with nicealkaline batteries, and are very easy to install. The defaultinstallation is very convenient for home use, as it allowsone to remove the entire alarm from the mounting bracketwith a simple twist. This is great when you want to changethe batteries or paint the ceiling. An externally accessiblebattery drawer is also convenient. The alarm is plenty loud.I can't comment on the effectiveness of the CO/smoke detectors,as I've only had them installed for a few days, but everythinglooks okay at this point.
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