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UM3561 help

  1. Apr 9, 2007 #1
    Hey guys I am trying to build the circuit from the following link, but I have been unable to find the three siren sound generator UM3561 and I was wondering whether anyone knew of where i could purchase one or what substitute i could use. I have searched all over the internet with no luck.


    http://www.electronicsforu.com/elec...06/CI-Jan06-02.pdf&title=IR Burglar Deterrent


  2. jcsd
  3. Apr 9, 2007 #2
  4. Apr 9, 2007 #3
    I saw them but there is one problem, they require a $20 minimum order but dont carry anything else I need for the project, but maybe i will call them and see what they say. Thanks
  5. Apr 10, 2007 #4


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    Staff: Mentor

    Hmmm. No match at findchips.com either. Hopefully the kelvin site works for you. Are there any other students building this project? Maybe you can all pool your order.
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