Smoke detectors that only beep at night are acting up for a specific reason: Here's what can save your sanity and sleep.

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 ...