1.It Makes It Easy To Locate And Track Buried And Hidden Wires And Other Hidden Lines.Applicable Only To Electrical Cables And Not To Sprinklers Or Irrigation Faucets2.It Is Easy To Find The Fence For Pets,Metal Wire,Metal Tubes,Electric Wires And So On. Determining A Hold On A Specific Drill Position Prior To Drilling3.Tracing Is Performed At A Depth Of 1,000 Feet.Source: 9V Alkaline Cell.4.Warning: Do Not Use The Circuit Of Load To Prevent Damage To The Tester! The Device Is Only Used To Locate Unpowered Wires.5.Warning: Only Applies To Single-Core Or Double-Core Wires,Not Wires Multi-Core And Beam. Not Including 9V Batteries. When shopping,please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and ,we have provided detailed information about the product,including its features and specifications We want you to be completely satisfied with your purchase,so if you have any questions or concerns,please don''''''''''''''''''''''''''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!