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Black buzzer; CO2 sensor??

Discussion in 'Post Yacht' started by bradlangdon, Sep 29, 2025 at 12:35 PM.

  1. bradlangdon, Sep 29, 2025 at 12:35 PM
    #1
    bradlangdon

    bradlangdon New Member

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    I found this black buzzer going off at random times but not very often. Does anyone know what this is designed for? It is on starboard side master stateroom. I was thinking that it was a CO2 sensor but would like to hear input. Thank you as always for any help that can be provided.
  2. YachtForums, Sep 29, 2025 at 1:02 PM
    #2
    YachtForums

    YachtForums Administrator

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    Hi Brad, we re-titled your thread for better indexing in search engines.
    bradlangdon likes this.
  3. Pascal, Sep 29, 2025 at 4:46 PM
    #3
    Pascal

    Pascal Senior Member

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    Do you really think we can offer any intelligent input if don’t bother describing the sensor or better post a picture…. No brand or markings? How old is the boat?

    Btw, co2 is carbon dioxide which is primarily used a fire extinguishing agent. The stuff you want to detect is Carbon Monoxide aka CO aka the silent killer.
  4. Norseman, Sep 29, 2025 at 4:56 PM
    #4
    Norseman

    Norseman Senior Member

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    Boats can be full of buzzers, like anchor alarms, bilge water level alarms, bilge pump active alarms, smoke detectors, CO detectors, radar proximity alarms, AIS alarms, autopilot or heading alarm and probably a few more including low battery alarms for some of the above sensors, detectors, buzzers, etc.
    Snap a picture of the offending buzzer and post right here and somebody on this board will most likely recognize it.
  5. mapism, Sep 29, 2025 at 5:00 PM
    #5
    mapism

    mapism Senior Member

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    Agreed 100%.
    In fact, the most intelligent answer to the OP question about what his buzzer is designed for is - ahem - to buzz! :D
  6. bradlangdon, Sep 30, 2025 at 11:24 AM
    #6
    bradlangdon

    bradlangdon New Member

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    Very interesting the responses here. I attempted to upload the pic but it must not have made , here is the pic hopefully.

    upload_2025-9-30_11-24-7.png
  7. Capt Ralph, Sep 30, 2025 at 11:55 AM
    #7
    Capt Ralph

    Capt Ralph Senior Member

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    I'm sure that is not factory.
    Reminds me of a home made bilge alarm.
    Some old Loran/GPS had remote alarm connects. Anchor watch?
    Start turning one breaker off at a time and/or follow the wires.
    SplashFl likes this.
  8. Pascal, Sep 30, 2025 at 4:01 PM
    #8
    Pascal

    Pascal Senior Member

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    Looks like an alarm buzzer not a CO detector.

    could be an anchor alarm, fire detector, high water …

    only way to know is to trace the wiring
  9. Norseman, Sep 30, 2025 at 5:02 PM
    #9
    Norseman

    Norseman Senior Member

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    Yeah, old and hardwired, no battery, no Bluetooth, no WiFi.
    Probably a repeater from whatever, the bridge or bilge.
    Either way, quite useful except when it blows false alarms;)
  10. Capt Ralph, Sep 30, 2025 at 6:16 PM
    #10
    Capt Ralph

    Capt Ralph Senior Member

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    Confusing when you don't know what it is alarming.
    Sheet; Could be high water in a shower sump for what we know.
  11. Norseman, Sep 30, 2025 at 7:51 PM
    #11
    Norseman

    Norseman Senior Member

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    Well, at least you be awake, 90% better than snoring away ..
    (Not that I would be doing that of course) o_O
  12. rtrafford, Sep 30, 2025 at 9:48 PM
    #12
    rtrafford

    rtrafford Senior Member

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    It just wants attention...
  13. rtrafford, Sep 30, 2025 at 9:50 PM
    #13
    rtrafford

    rtrafford Senior Member

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    Agreed. Not CO. I'd wager an anchor alarm...or perhaps a Wife Alert?
  14. Norseman, Sep 30, 2025 at 10:03 PM
    #14
    Norseman

    Norseman Senior Member

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    Wife Alert…?
    Wow, I need one of those, or I did, just prior to the wedding X 3.:eek:
  15. rtrafford, Sep 30, 2025 at 10:05 PM
    #15
    rtrafford

    rtrafford Senior Member

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    Made by the folks at Life Alert. If you've fallen it gets you up...