Who hid in the wall, it's not my fault

Milwaukee is known as a manufacturer of all kinds of electrical equipment for builders: drills, screwdrivers and so on. But this thing, I think, should be appreciated by those who at least once in their life tried to repair an old house (the option is to bring a new apartment into a residential form in a low-budget high-rise building).

SUB-SCANNER M12 (link to the American site, because I did not find this product in Russian) is a wireless detector that “sees” what is being done inside the wall. The material from which this wall is made is unprincipled, it can be wood, drywall or even marble. Viewing depth - 6 inches (15.1 cm).

Thus, the machine is able to find wiring, a beam, a built-in safe or another cavity, as well as fittings and other "surprises", which are often opened even when the drill damaged the wires and the punch flew off "somewhere inside" and the money was spoiled. Results are shown in black and white.

The detector is powered by a 12V lithium-ion battery and costs, if I'm not mistaken, around $ 340.