Zircon StudSensor L70 OneStep Stud Finder StudScan mode locates the center, edges, and direction of wood or metal studs up to 3/4-in deep DeepScan mode doubles the scanning depth to 1-1/2-in WireWarning detection indicates the presence of live, unshielded electrical wiring up to 2-in deep Easy-to-read backlit LCD display indicates center, edge, and direction of approaching stud SpotLite pointer shines an arrow-shaped light on the wall to clearly indicate the center of the stud