Why smoke detectors chirp

Questions covered in this video:

  1. What does a single chirp from a smoke detector indicate?
  2. How often does a smoke detector chirp when the battery is low?
  3. What type of battery is commonly used in smoke detectors?
  4. How do I access the battery compartment in a smoke detector?
  5. What does a green light on a smoke detector signify?
  6. What is the purpose of the battery in a smoke detector?
  7. How long do smoke detectors generally last?
  8. What does three chirps from a smoke detector mean?
  9. How can I determine the age of a smoke detector?
  10. What physical changes occur in a smoke detector as it ages?
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