The Pocket-Sized Fun Intruder Alarm

I hope you like this project! If you have any questions please feel free to leave them below.
I think the buzzer emit a very shrill sound and his dog barks a lot for the sound, no? <br>
Where does the barking dog sound come from? You can't just add a speaker to the alarm and get that. Is it preprogramed into the original alarm? Mine emits a high piched siren type sound from it's piezo buzzer.

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Bio: I love crafts, technology and anything to do with inventing!
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