Before we get into the wall scanner  I know what you are thinking.  This thing will show you exactly behind the wall like superman.  Well, not exactly, it will give you a good idea of what is behind a wall.  In our test results it had a 95% accuracy rating which is pretty good.  You need to do multiple scans to get a good picture of what is behind a wall.

This scanner will scan through walls, tile and concrete and give you a visual image of what is behind the surface.  It detects all common building materials and can tell you if it found ferrous or non ferrous metal.  It also can detect plastic pipe, wood and wood with nails.  It is powered by the DeWALT 12V Max battery platform.

The only inconsistency we had was when it was over a non ferrous pipe and picked up a drywall screw, this would give it a reading of ferrous metal.  Scanning other areas of the wall will help you determine what is there.  The unit will also detect live wires that are not in EMT pipe.  Scan depth is about 3″ and the unit can be switched to the material you are working with.  For the contractor this tool will save time and money from day one and pay for itself instantly.  It has a standard 3 year warranty.  Check out the video below and let us know what you think of the DCT419 Wall Scanner from DeWALT.