I think the best approach is to go with standard "linked" detectors with hardwired signal+power, and then for automation you can get a "bridge" to will forward the signal from the wire to your home automation system.
this post was submitted on 24 Nov 2023
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Home Automation
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Thanks - that’s what I’ve been leaning towards. I need to go check if the current ones are interconnected or not, but they are all hard-wired (and have been getting removed as it’s time, so really time to replace all around).
At this point I’d be ok if the ‘best’ were simply old school hard-wired and setting the HomePods to detect the alarms, but someone linked a zwave connector down below.
Any recommendations RE: brands?
The Zooz Zen55 is a good option. Works with Hardwired alarms and can be installed in the same box as the last detector in the line.
I've been running the First Alert Z-Wave Smoke and CO detectors for 4 years with no false detections. They're $32 on Amazon today
Just to be clear, are you looking for air quality CO2 or safety CO?
To further clarify, that's carbon dioxide (CO2)--moderately inconvenient vs. carbon monoxide (CO)--deadly.
Good catch - I meant Carbon Monoxide/CO.
I have had the Nest units in my last 3 homes and really like them.
I'm facing the same dilemma right now.
I have heat/smoke detectors tied into my Ademco Vista alarm panel and it's monitored by a central station, so I have that covered. I do not, however, have any CO detectors.
Like you, I consider linked, hardwired detectors the way to go and I've identified some candidates. There's also a Z-wave bridge that can tie to the signaling wire to communicate back to Home Assistant. I'm trying to decide what the value there is beyond being able to monitor CO levels when I'm not home.
Here's the CO detector: https://www.homedepot.com/p/Gentex-Hardwired-Interconnected-CO-Alarm-with-Dualink-and-Relay-Contacts-CO1209F/202934253
Here's the bridge: https://www.thesmartesthouse.com/products/zooz-800-series-z-wave-long-range-dc-signal-sensor