Detector Sensor Wall Scanner-Electronic Sensor Metal Detector With Lcd Display Features: Sensor Scanner Depth:Detects Up To 0.71 Inches (18Mm),Metal Up To 1.2 Inches (30Mm),Presence Of Live Wire Up To 3 Inches (50Mm). 3 In 1:Multi-Scanner Finder For Wood,Metal,Ac Current.Quickly Locates Edges And Center Of Wood,Wall Studs,Metal,Wooden Joist,Rebar Behind Walls,Floors And Ceilings,Also Indicates The Presence Of Live Ac Wire. Easy To Read:Lcd With Digital Display And Continuous Sound Indicating You The Location Of The Edges Of The Studs. Easy To Use:Battery Installation,The Unit Is With A Long Beep,When Auto Power Off,Press Test Button For Two Seconds To Turn On Again.Auto Power Off Without Any. Compact Design Is Easy To Hold And Use.Low Battery Indication.Battery:Aaa 1.5Vx3（Not Included）. Specifications: Color:Blue,Red,Yellow,Green(Optional) Material:Abs Battery Power:Aaa 1.5V X3(Not Include) Detecting Depth:Wood 30X30Mm:≤18Mm Metal Detecting Depth:Iron Pipe 25Mm:≤30Mm Ac Live Wires:Ac 90-520V Live Wire（5Cm），Frequency At 50-60Hz Operating Temperature And Humidity:-7℃-40℃,