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Auditory signal when refrigerator door left open

Discussion in 'Electronic Basics' started by Robert Cherry, Jul 12, 2004.

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  1. Does anyone know of a simple circuit that makes a noise when a
    refrigerator door is not closed?

    Please send it directly to me at


    Robert Cherry
  2. Well, if the fridge has got a light which shuts of when door closes, you
    could use a ldr close to the lightbulb and some transistors...
  3. John Larkin

    John Larkin Guest

    I hooked a bungee cord to the bottom of the door to slam it shut. The
    freezer side would stay open a fraction of an inch, not enough to
    light the light but enough to melt the ice cream.

  4. John G

    John G Guest

    Buy a Samsung 2 door,what you want comes standard at least in the 50hz
  5. Andre

    Andre Guest

    My wife is making noise if I forgot to close any door..:)
  6. So you have a perfect audible alarm already!

    No cost for components or extra energy and it never fails.


    petrus bitbyter
  7. andy

    andy Guest

    or put a magnetic reed switch in the door frame, wired to a buzzer - the
    magnetic door strip should close it when the door shuts.
  8. Sparks

    Sparks Guest

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