No. of Recommendations: 0
The chirp codes on these units are different, but clear. For the SC7010B units 4 chirps, pause, 4 chirps is a low level CO alert. A single chirp means replace the battery. Three chirp bursts for malfunction - replacement required. Five chirps is an End of Life.

These different chirp codes are a pain. I just replaced a CO detector last week.
I read the manual and I printed a label with a label maker of the codes and taped it to the unit so it is easy to read. This Kidde unit expires (with a chirp code) in 10 years and has a 3 day pause, repeatable up to 10 times before it chirps you to insanity.
I'm not going to remember this, but its on the label.

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