I’m looking to replace my current smoke/co detectors with a smart/HA-friendly setup.
Due to building code, my requirements:
mains-powered with battery backup
fully interconnected
heat detector units in the garage (this last part is tricky)
My goals:
#1 - be able to tell which detector (which room) is the trigger. This is the big thing.
#2 - get alerts when the alarm goes off
optionally - be able to detect battery level, silence alarms by app, etc
My current setup is a bunch of traditional smoke/co detectors, interconnected, mains-powered. I actually have SM120X/CO120X relays wired up for future integration, so I can easily integrate that with my hub and send notifications when the alarm goes off.
What I can’t do is detect which room is triggering the alarm, which is the big thing. I’ve been looking for a smart setup, but I can’t find anything that fits the requirements. The Nest units are close, but they don’t offer dedicated heat detectors. There are the first alert zwave units, but they’re not mains-powered.
The only thing I can think is to go the DIY route. My thought is esp8266 units with photodiodes on each smoke detector, which read and report on the LEDs. I think I can decode everything I need from that (alarm, which unit is triggering, low battery, etc). I’m wary of modifying the detectors themselves, so I’m not considering modifying/soldering the detectors.
But is there any off-the-shelf smart smoke detectors that fits my requirements? I’d rather do off the shelf is possible.