No one tells you what those different beeps or on-off lights on your smoke detector mean. Here's what you need to know.

Small flashing red lights and chirping sounds every 30 to 60 seconds can mean it’s time to change a smoke alarm’s battery. Some models may have a green flashing light or announce “low battery,” so ...

You know you should install smoke and CO alarms indoors, but do you know what the beeps they make mean? Learn about these ...