very simple and basic and don't do it's job well at all. i've tried just simply to locate studs through drywall (both wood and metal) and it seems to think there is 2" and 3" wide studs every few inches in the wall. i don't know if it picking up conduit or plumbing, but i read the directions and followed them exactly and havn't had consistent restults once, even on wall is my house i know to be 16" oc with nothing but insulation in between and it still acts funny. i'll be trying the zircon one next, may you... more info
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This Old House (1-year) from The Time Inc. Magazine Company (Magazine) - Usually ships in 1 to 3 months