Courtesy of But She's A Girl, a warning:

Regular readers will know that I sometimes write reviews of various kinds on this blog, particularly reviewing new technology. Today, I would like to review the Dual Cat Alarm (or DCA), which I seem to have acquired. I don't remember actually wanting such a thing, but apparently I have one, whether I want it or not. […]

But it's all a matter of perspective, isn't it? I'm guessing that Alarms 1 and 2 think the DCA is working just fine, which is surely the sole consideration of any real importance.