How do smoke detectors work?

There are two types of smoke detectors - ionization and photo-electric. The function of both is the same. When smoke or smoke particulates are detected, an alarm will sound. This alarm is usually a high-pitched steady tone and the detector may have flashing or strobe lights.

Smoke detectors are either hard-wired or battery operated or a combination of the two. When a smoke detector starts giving a low occasional chirping sound, this indicates that your battery is going dead. If you buy a smoke detector, read the manufacturers' direction completely.

Show All Answers

1. What should I do in case of fire?
2. What happens when I call 911?
3. What does HazMat mean?
4. How do smoke detectors work?
5. What should I do if I am told to evacuate?
6. What supplies do I need to keep on hand for the first 72-hour survival?
7. Can my pet be brought to the shelter with me?
8. Where can I get food and/or water?
9. How will I know which roads are impassable?
10. What is the difference between a watch and a warning?
11. How can I find out if my home is in a flood plain and what does that mean?
12. How long will my frozen food last after a power outage?
13. What should I do if I'm told to shelter in place?
14. Who do I contact about a bill for Emergency Medical Services?
15. What number should I give my alarm company for burglar/fire alarm activations?