Is such a device possible?

Discussion in 'General Electronics Chat' started by anniefiesta, Jan 24, 2013.

  1. anniefiesta

    Thread Starter New Member

    Jan 24, 2013
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    Hi, I joined this forum to get some advice, as I know nothing about electronics, but want to find out if it is possible to create a device, comprised of 2 parts, that will beep when separated from one another at a distance, for example, of 10 metres?

    Thanks
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,429
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    yes, it is possible.
     
  3. Brainbox

    Member

    Nov 15, 2010
    25
    2
    Yes, you can simply take a cord of 10 meters connected to a switch, battery and buzzer.
    When the cord is stretched to its full length it activates the switch and close a circuit to let the buzzer beep.
     
  4. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
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    Probably best to do it with low power RF transmitters. Certain bands, like 455Mhz for instance, allow such devices to run unlicensed, provided certain restrictions ( I think ) I've thought about that, put one on my luggage and the other on my belt or something so I don't walk away and forget to get my luggage in the airport.
     
  5. anniefiesta

    Thread Starter New Member

    Jan 24, 2013
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    Thanks for your quick reply. Is there anything out there already, or is it something I would have to get made, and if so, any ideas who would be able to make it?
     
  6. anniefiesta

    Thread Starter New Member

    Jan 24, 2013
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    Sorry hadn't seen all your replies. Are there companies you can make stuff like that for you, if there is nothing available already?
     
  7. BillB3857

    Senior Member

    Feb 28, 2009
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  8. anniefiesta

    Thread Starter New Member

    Jan 24, 2013
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    Brilliant! Thanks :)
     
  9. Audioguru

    New Member

    Dec 20, 2007
    9,411
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    Notice that the reception may vary due to interference or obstacles.
    It probably will not fail, instead it will give many false alarms which might drive you crazy.
     
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