How To Tell If A Smoke Detector Is Bad?
How do I know if my smoke detector is bad?
Your smoke detector might start beeping – a sign that you need to replace the batteries – or, a green light will go off or turn red. Your smoke detector might just sound an alarm that won’t turn off until you yank it down from the ceiling and disconnect the bad battery.
Why does my smoke alarm go off randomly?
It is normal for smoke alarms to go off and sound briefly (up to 5-10 seconds) when you install a new battery or when they are powered up. If the alarm continues to go off and no smoke is present, the cause may be one of the following: There may be insufficient battery power, try new batteries.
Do smoke alarms go off when they expire?
Smoke Alarms Eventually Expire
Just like that milk sitting in your fridge, smoke alarms go bad after a while. The National Fire Protection Association recommends that you replace your smoke alarms every ten years.
How long do hard wired smoke detectors last?