In general, if you really need to find out the wiring in the house / apartment, the floor is ceramic tiles, or in the wall, everywhere except drywall and wood, you will not succeed, the device is completely useless in this regard. And as for drywall, well, I don’t need it, since I bought a house, and the walls are all brick or tile in the bathroom in the kitchen, there is no drywall. It is possible that the device is good, but not for the purposes that I bought. Believe the sellers, it's worse for yourself. Just a rush before closing and I had to take the device. He quickly asked "tell me not the cheapest, to detect hidden wiring in the wall", pointed "this" with his finger, believed . instructive .
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