I think that this is MFD Dowsing Frequency system without use of Ground unit , works only with Hand Unit , When user selected any Metals for search from LCD (Gold, Gold2 or Cooper) this unit started Transmitted Resonant frequency of selected metal and so use located or find buried place ( for example many Human use 8700 Hz for search of Silver ) .
Also my Dowsing system works So , but I use extra Ground unit , here Sending Frequency of Hand Unit and of Ground unit is different .
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