This is the forum archive of Homey. For more information about Homey, visit the Official Homey website.

The Homey Community has been moved to

This forum is now read-only for archive purposes.

detect smoke alarm sound

To prevent expansive replacement of all my smoke detectors, the make about the same noice and a lot of db. If homey is able to listen to sound commants will ik be able to detect this sound and make an alert (without first calling, homey). This way there will be a lot of new cheap features possible.

- start a backup tool on my laptop using an api? (after wol?)
- lights on
- alarm to all phones/ contacts etc. etc.


  • I don't think this would be reliable, and therefore in general a bad idea. Sound detection simply just isn't a very reliable method - what if your music is a bit loud and the Homey 'thinks' the alarm has gone off, or someone whistles or a car alarm goes off outside, or your dishwasher finishes its program and beeps, or your microwave oven, or whatever.

    I do have an idea for a much more reliable solution that can work with cheap smoke detectors, though. Most smoke detectors are capable of being hooked up to a central system with wires, for power and/or for reporting their status back to a central system. In such a situation you could instead wire it up via RF, Z-wave, bluetooth, or such. For example a Fibaro universal binary sensor on Z-wave. I'm pretty sure with some work you can hook perfectly standard smoke detector(s) up using wires to a device such as that one, that can detect a high/low state on the wires leading to the smoke detector(s), and communicate the status to the Homey reliably. For example you could wire up all smoke detectors together to one such Z-wave device, or a cheaper RF device, or whatever you can find that can fulfill the detection of the status of the smoke detector(s), and that communicates that state with Homey.

    This is just my view on the situation, though. Personally I use the smoke detectors by Fibaro, which are relatively expensive, but seem to work well.
  • Wouldn't this be an easier solution then?
  • Fire69 said:
    Wouldn't this be an easier solution then?

    Looks like a great solution for existing fire alarms! Unfortunately I can't find a public API. Furthermore it seems that the roost also uses sound detection and there are comments its not working properly in all situations.
  • @Fire69 : interesting product. Same argument applies though; again sound detection. Though to be fair, since it's sitting right on top of the smoke alarm (or inside it) it will probably be better than having the Homey listen to it from far away. But yeah, just like DieterKoblenz has found on the internet, there are people that are using this and have experienced issues with the sound detection. It just is not a reliable method (unless you're a human, heh).

    One thing I did find interesting about the Roost is that the programming of the Roost seems to actually occur using a burst of sound from a smartphone speaker. Neat, and odd.
  • Hm, when I first saw it on KS, I thought it detected the current draw on the battery when the sirene sounded.
    Either I misunderstood or they changed it :smile: 
  • EmileEmile Administrator, Athom
    What a brilliant product!
  • Love it, but knowing it is advised you replace your smoke alarm every 5-10 years: also check eg:
  • luccie_007luccie_007 Member
    edited January 2016
    Aliexpress sells some nice 433mhz smoke alarms, which can be paired.
    Also on the netherlands some are available:

    Thinking about buying some of these, Domotocz has already intrgrated these so some kind of api should be available.

  • Thanks all for picking this up so fast. I know about other product and domtocz build in, i was just wondering if it could be an extra feature as there is a mic in the device and notify a possible hit. The sound is still in the detector, i only want a notification that there is a loud alarm (like other camera's/ sensors do with zwave) if the homey can do this there is now a low level of getting more info then i have now when i'm away.
This discussion has been closed.