Has pros: If you get a repair and you don’t know where the wires go in it, it does its job quite well. It makes no sense to compare it with professional devices 5-10 times more expensive, but for the money it's a great thing. Pretty comfortable, backlit display and speaker are very good. In simple cases (that is, the wires run strictly horizontally or vertically, and not scattered, say, in spirals), everything that is needed will be shown. Cons below: It requires compliance with certain rules in work, which can be found out mainly by practice: you just need to drive along the wall touching all three contacts (i. E., it will indistinctly show the hanging wire), you need to drive smoothly, etc. After one and a half centimeter porcelain tiles in the bathrooms do not show anything at all for me - although there are definitely wires there). As it was noticed here - it can be easier to search in the mode of a piece of iron, and not electricity.
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