Review on Jansamn Scanner Detector Finders Detection by Jonathan Cartwright

The device looks and functions like a child's toy. The screen lights up and beeps when calibrating, so everything works as described. I tested it in my garage where the cleats were clearly marked by the builders. The unit couldn't reliably locate any of them. I've tried and tried with no success. He claimed to find edges where none were, and then never found the middle or the other edge. The signal jumped to the maximum for no good reason. Also, it leaves marks on the wall as it moves, as long as it actually touches the wall. Well at least I knew where the studs were and proceeded to install the reinforced shelves. But I won't use the device for anything as it failed the basic test to fulfill its main function. I think he got the wiring right. may be.