Nest Protect failing AGAIN

[Scott1]

I bought 5 2nd gen Nest Protects in 2021. They are supposed to last 10 years. I have now had my SECOND one fail after less than 3 years, conveniently out of warranty. I replaced the one but am giving up on Nest. I refuse to keep buying new Nests every 3 years. Cheap smoke detectors last much longer.

[Hnicnelson]

How do you know they are broken.. mine just started flashing yellow tonight after internet outage.. checks say they are functioning tho...

[Scott1]

It was chirping and when I pushed the button, it said that the sensors have failed. I removed the batteries and put them back in...it has stopped chirping and says ok, so we'll see. BTW, my first one that failed did the same thing, I replaced the batteries and it worked for about a day before saying the sensors had failed.