Nest Protect Smoke Alarm replacement - First Alert SC5?

Hardware
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For a few years now I have been searching for an ideal replacement of my 6 Nest Protect smoke alarms. Based on my research it appears that the recently announced SC5 from First Alert is the intended replacement (by Google) for the Nest Protect. A youtube video by First Alert also showed that you can mix and match Nest Protect with SC5 enabling the replacement of the detectors as they expire.

First Alert SC5 Hardwire Smart Smoke and Carbon Monoxide Alarm
SKU: FSMCO600NVACCL1

Since I am mostly happy with Nest Protect’s features, the SC5 seems to be an ideal replacement given they are supposedly equivalent in functionality… BUT… do they integrate into Home Assistant or will they have the same support issues the Nest Protects have?

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So am interested in the same question! Would love to start bringing (or replacing) the few cloud devices I have to local operation only.

Was very disappointed but not shocked that Google decided to abandon the platform. Fortunately did not use HA for anything related other than the Thermostats (which is another topic for discussion).

I just replaced one of my Nest smokes with the SC5 - and it seemed to work fine. It came with an adapter so no rewiring and it mounted right onto the existing bracket, had to download yet another app to install but it all went smoothly - it did keep trying to insist I use chrome as the browser on my android phone but eventually by switching to “desktop” it seemed to go through. I think it’s now part of the Nest wireless interconnect but have not tested yet.

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@erktrek Can the SC5 connect to HA without the homebridge workaround or the hacky integration?

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This is what I was wondering. I have 6 nest protects and I’m on the fence about these.

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@erktrek - I avoid buying hardware made by Google (or through an acquisition) as they seem to do this often (drop support).

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I just bought 9 First Alert SC5 devices to replace 9 of my 13 Nest protects that all expired at the same time…

I can confirm: They do NOT work with the existing Nest Protect HACS integration and I (so far) have not found any other integration for First Alert for Home Assistant. :frowning:

I am also disapointed that the First Alert app dosn’t support iOS critical notifications. Meaning you wont get alerted even if your device is in DND mode. You need to link the devices to your google account to get iOS critical notficiations.

I really hope both of these things change as it wasn’t cheap moving to 9 of these all at once!

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