Test smoke and CO detectors
California code requires interconnected detectors. Monthly testing keeps them working.
What you'll learn
- Why California now requires interconnected alarms in every bedroom
- The 30-second monthly test routine
- 10-year replacement rule (check the manufacturing date)
- What the different chirp patterns actually mean
Step by step
- Press the TEST button on each alarm. It should beep loudly within a second.
- Interconnected alarms should ALL beep when one is tested.
- Check the manufacturing date on the back. Over 10 years old? Replace.
- Replace 9V batteries annually; sealed 10-year lithium units don't need battery changes.
Safety note
Intermittent chirping (once per minute) means low battery OR end-of-life. Don't just pull the battery. That 30 seconds of silence isn't worth your family.
Rather have a pro handle it?
Electrical work across San Diego County. Call and we'll match you with a licensed C-10 electrician.
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