DIY Metal Detector KitTo come up against an electric cable while drilling a hole in a wall can have catastrophic consequences.Likewise, drilling into gas, water pipes or central heating pipes can be extremely hazardous.With a handy metal detector it can now be determined beforehand whether there are metal objects to be found in a wall, ceiling or floor.An LED indicates if a metal object is in the vicinity.Features:Avoid disasters when drilling holes in wallsLocate pipes, cables, metal studs, etcGreat project for novicesPush button operationAdjustable sensitivityLED proximity indicatorSpecifications:Max metal detecting distance adjustable: up to 3.15 InchsPower supply: 9 Volt battery (not included)LED indication12 Volt DC-buzzer connection (buzzer not included)Dimensions: 2.2″ x 2.5″Velleman-KitK7102