Wireless Bell

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I'm planning to build something similar to a wireless door bell for my project.The receiver (producing the beep) needs to be built as small as possible.
 
I'm planning to build something similar to a wireless door bell for my project.The receiver (producing the beep) needs to be built as small as possible.

Is there a question in there or are you just telling us what you are going to do?
If some post your circuit for us to see.
 
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