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The original was posted on /r/homeassistant by /u/TheProffalken on 2025-03-30 16:05:57+00:00.
The end has finally come for the Nest Protect.
I love these devices, I’ve got four of them and they’re great, even if you can’t use the motion sensor within Home Assistant when you’re running the battery version.
There’s no way I’m going to run power for a new set of alarms through the house - we’ve only just finished redecorating in the last 6 months - but some of these are going to be coming to the end of their 10-year life soon, so what should I replace them with?
The only alarm I have in my house that isn’t a Nest is a solitary mains powered Aico Ei144RC, which has since been replaced by the Ei144e. These have something called “smart link” in them, but that requires a gateway that is over £200 which is well past what I can afford.
I will not self-build something like this for a number of reasons:
- I don’t trust an ESP32 enough for critical-path systems
- I don’t trust a $5 sensor from AliExpress to save my life
- If the alarms don’t go off, I want someone I can sue
All options that are UK-specific other than self-build are more than welcome!