Our smoke/CO alarms are hard-wired AND have a 10-year battery. Personally, I’ve never seen one that’s ONLY hardwired. In fact you really don’t one that is. If there’s an electrical fire, then your detectors could be rendered useless.
How did you get red?
Our house was built in 2000.
If no power, which could be caused by an electrical fire, the 9-Volt batteries will sound all of the alarms!
When the alarm’s battery gets low (~2+ years), the alarm will chirp a low-battery signal.
When replacing the battery I also vacuum the detector.
When the smoke alarm expires in 10 years, it will sound two beeps every minute.
So it does have battery also.
Correct.
Each hardwired smoke alarm has a regular 9-Volt battery. Nothing special.
First I write the date on the battery before inserted.
Unfortunately when the smoke alarm double-chirps end-of-life, the unit must be removed.
It cannot be reset for a week to allow time to get another smoke alarm.
Correct.
Each hardwired smoke alarm has a regular 9-Volt battery. Nothing special.
First I write the date on the battery before inserted.
Unfortunately when the smoke alarm double-chirps end-of-life, the unit must be removed.
It cannot be reset for a week to allow another to be bought and installed.