Item No.: C23A225
.Finds wood, metal studs joists and AC wire behind walls, floors, and ceilings.  
.1/2"scan mode scans through surface up to 1/2 inch  thick.  
.1"scan mode scans through surface up to 1 inch  thick.  
.1½"scan mode scans through surface up to 1½ inch  thick.  
.Metal mode scan for metal pipes or rebar.  
.AC mode scan for electrical wires.  
.AC wire warming works continuously in all modes for safety.  
.Power:9V battery.