Smoke alarm keeps chirping. Can't figure it out.

[usregimechange]

It isn't the battery cause I changed it. It is wired and ran with electricity with a battery backup. They are apparently connected because when one goes off they all do. It went off this morning and there was no smoke or anything.

Any ideas?

Thanks...

[femmocrat]

1. Check it for spider webs.

That happened to ours.

[Shagbark Hickory]

2. Time for a new one.

They don't last forever.

[Phentex]

10. Yep. We had to replace all of ours...

chirping is gone. This was after I kept trying new batteries. Of course, they all chirped at different times.

[Shagbark Hickory]

13. Mine seem to like to start chirping at 4am

[Phentex]

17. They never chirp during the day...

never!

2:00 am - chirp!

3:15 - chirp!

3:22 - chirp!

[ohiosmith]

3. Push the test button.

[hunter]

4. Sometimes you just have to buy a new one.

I guess failing with a false alarm is better than failing with no alarm.

[Liberal_in_LA]

16. How long should a smoke alarm last?

[hunter]

18. FEMA says 8-10 years.

http://www.usfa.fema.gov/citizens/home_fire_prev/alarms

Wow. That's a lot of smoke alarms going into the trash.

[undeterred]

5. Submerge it in the bathtub.

[applegrove]

6. The last time I changed the battery in mine it began to churp. I got used to it. Whatever you

do do not deactivate it.

[Bake]

7. RUN FOR YOUR LIFE!!!

:hi:

Bake

[Ohio Joe]

8. This used to happen to me in my apartment in Dublin, OH

It took me ages to figure it out. The apartment came with an alarm system that I never subscribed to and for reasons I never found out, it had a "smoke alarm" button. About once every 2-3 months, the smoke alarm would start chirping and I had to press the "smoke alarm" button on the freaking alarm system I did not use. Don't know why, never asked, I just know it worked.

[GreenPartyVoter]

9. Is it just a smoke detector or smoke and carbon monoxide combo?

[MicaelS]

11. Clean them out...

Remove the covers and blow out with canned air. Or get out the vacuum cleaner, extension nozzle and soft brush. Use the vacuum to suck, not blow.

[hedgehog]

12. Sometimes high humidity sets them off.

[struggle4progress]

14. +

[RedCloud]

15. During their mating season, one chirps to get the others chirping.

[geardaddy]

19. Maybe it's hungry?

[mikeytherat]

20. Agree with others in the thread - dust/particulate on the sensor(s)

Blow it out carefully with compressed air.

mikey_the_rat

[Tyrs WolfDaemon]

21. Maybe you have ghosts?

Many of those ghost pictures make them look like smoke...

So couldn't they set one off?

[IcyPeas]

22. when I plug my iron in my smoke alarm always chirps once or twice

they must be on the same line (or something)