Hi FrancoItaly
I made your LRL with SMD components, but I don't know how much to tune the potentiometer screws to adjust it? (I'm looking for gold)
But sometimes when I tune the potentiometers, and walk to the refrigerator door, the LED lights up and the speaker beeps, and when I walk away from the refrigerator, the lights go out and the speaker does not beep!
Also, when I walk to the place where the toilet well has been dug, the lights and speakers turn on!
Does this device detect a magnetic field or ions?
Best Regards
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