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The original was posted on /r/homeassistant by /u/wivaca2 on 2026-07-15 18:25:28+00:00.
I'm in a house built in 1998 that has hard-wired smoke alarms with 9V battery backup.
While installing new backup batteries recently I realized that some of them are now making pretty weak noises when I push the test button: Like "won't wake you up" quiet. They're also not wired into an alarm system, just a stand-alone smoke alarms interconnected by what appears to be 110V wiring, so if they did go off while we're not home, I'd never know about it.
Bottom line is they're due for a replacement. I'd like to get new ones that are either hardwired or not and work together as an independent system from HA, yet also communicate with HA, but I want some that DO NOT need a phone app to setup and of course no ongoing cloud, either.
I see some Zigbee ones, but can I just enroll them like any other Zigbee device? Looking for someone who can point me at some that meet my criteria of not needing an app for setup and I can just do it right in HA.
I also have ZWave and a SLZB-MR1 that does the Zigbee and Thread, but have nothing going on Thread.
Another question I have is when these mesh with each other, are they also using any other Zigbee non-smoke detector devices as their mesh?