My smoke detector is chirping, what does that mean?

Most modern smoke detectors will chirp to alert you the batteries are low, you should replace the batteries and test your smoke detector. Smoke detectors can be purchased at any hardware or large commercial department store.

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1. How often should I change the batteries in my smoke detectors?
2. How long do smoke and carbon monoxide detectors last?
3. How many smoke detectors do I need in my home?
4. My smoke detector is chirping, what does that mean?
5. What type of smoke detector should I have in my home?