Zircon SuperScan M4 Stud Finder

New target control mode locates the center, edges and direction of wood studs and not metal, up to 3/4 in. D (19 mm) behind surfaces, identifies safe-to-drill zones between adjacent drywall screws, nails and protector plates StudScan mode locates center, edges and direction of wood and metal studs up to 3/4 in. D (19 mm) Deep scan mode doubles the scan depth of wood and metal studs up to 1-1/2 in. D (38 mm) Metal scan mode locates ferrous metal up to 3 in. D (75 mm) and non-ferrous metal up to 1-1/2 in. D (38 mm) AC scan mode locates live, unshielded AC electrical wiring up to 2 in. D (50 mm)