Each home security system has its own set of cues and meanings, and you'll need to consult with your manual to work them out. There are, however, a few universal warning sounds used for most household ...

When a carbon monoxide alarm breaks the quiet with a random chirp, it is tempting to brush it off as a glitch. In reality, those short beeps are coded messages about everything from a dying battery to ...

We’ve all been there. It’s 2 a.m. and you hear an eardrum-piercing beep. Your first reaction is to cover your head with a pillow and pretend it never happened. Eventually the slow chirping takes ...