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The original was posted on /r/homeassistant by /u/Big-Sweet-2179 on 2025-07-13 04:01:56+00:00.

Since Nest Protect smoke and CO alarm seems to have been discontinued, I’m wondering what’s the alternative to it. I’ve read stuff about First Alarm, X-sense and Kidde, but reviews are very mixed. Perhaps there’s a more reliable model between these brands or am I missing something?

I though I’d ask the experts here.