Both the SmartThings hub and the Iris by Lowe’s hub will continue to support the Halo Alarm, so you can keep the smarts of your smart smoke detector as long as you connect it through one of those bridges.
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Some ongoing discussion here
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Could be worse, I guess.
When Lowes stopped selling the devices even though they were in stock, and the company stopped responding to customer support inquiries, I was worried something was wrong with the actual devices.
At least we can still use it with ST.
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Can someone explain why this was ever a popular device?
Don’t we all have voice-assistants and smartphones apps that can give us weather alerts?
It was the only smoke and co detector that integrated with smartthings and also worked with “dumb” interconnected smoke/co detectors.
So it could notify a standard alarm panel to call the fire department?
Or just tell the other “dumb” interconnected detectors to beep as well?
I doubt anyone bought it primarily for the weather alerts.
I didn’t need them, so I bought the slightly cheaper version without weather alerts.
Seems like a useful feature to have for many people though, if you want certain emergency weather conditions to wake everyone up in the middle of the night, for example.
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This. As @Automated_House mentioned, any other smart co/detector is either totally wireless, or uses a wireless interconnect so it only works within its own ecosystem (like nest protect).
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Grr, I was about to buy some of these. There doesn’t seem to be a suitable alternative.
The weather feature was nice but not critical. What I cared about was a smoke/CO sensor that tied to ST and was hardwired with a battery back-up. The Halo was the ONLY option. Now what?
I believe it’s possible to do all this with a nest protect. But it would require a community-developed solution to integrate with ST and it wouldn’t be a local zigbee connection like halo is capable of.
I don’t have any nest devices, but there are a few active threads that should give you an idea of whether nest protects can be tied in to ST.
If you can run 120v wires to your detectors you can use this solution:
There is a community project called NST Manager that integrates Nest Thermostats, Cams, Protects, etc.
That’s what I was referring to, thanks.
I purchased halo detectors for my house, and I just added them to the halo app without integrating to SmartThings. I’d like to remove them from the Halo App and pair them with my hub. I don’t see halo listed as an available device under smoke detectors when I go to add devices and select manual device add. Does anyone know if SmartThings removed support from their end when Halo folded?
Reset your halo by holding the test button for 20 seconds. Then while it’s in setup mode, put your hub into pairing mode. It should join.
They have indeed removed it. Try resetting the Halo and adding another device to get the hub in pairing mode and see if it finds it.
I bought one knowing that the founders of Halo went out of business. Thankfully the Halo+ connected to ST without an issue using @marktheknife 's reset post!
But… every now and then, the weather channel comes on saying that it has lost service. Its very annoying. Can I change the channel/network somehow via IDE? or is there a way to manually disable the weather portion? Thanks!
I have never had this happen yet with mine. When you say “channel” I assume you are referring to the Zigbee mesh correct and not the weather channel on the Halo itself?
I believe the only way to remesh it would be to reset it and repair with ST. But I wouldn’t do that now as the DTH has been removed from ST and Halo would not provide the code for us to publish it via GitHub. I think if you removed it you would never get it re-paired 
Not the mesh! Halo refers to the radio settings as S.A.M.E, basically to chose 1 of 7 frequencies that works best in your area. Also to allow EAS to work. But without the Halo app, these settings are unavailable. I would like to disable the weather radio all together.
@mejifair , should also mention that there are two possibilities for why you haven’t heard it. One, the obvious, you don’t have the Plus (+) my model. The + had the weather radio. Second, the default frequency is optimal for your location.
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Although Halo is Out of Business can I still pair a Halo detector in ST and avail the associated functionality? I am reading conflicting information in this forum that it is no more possible whereas in a different post - its still possible.
I have a friend who has offered me 3 brand new Halo Smoke/CO detectors. Incidentally, I am in need of at least 1 since I have a bunch of hard-wired dumb detectors. This would provide me the capability of detecting in my phone via alerts if any of the dumb ones trigger. Alternative options like relay+switch wont work for me as property owner will not allow it / Nest is cost prohibitive. I can’t do trial and error as shipment takes time and money. Thus asking…
He also has new Halo+, which means weather alerts. On similar lines are there any caveats of getting Halo+ vs Halo, i.e. as out of business there is now no way to switch the weather channels , etc to match my location.