Telephone Wire Tracker Tracer Network Cable Tester Detector Line FinderCable"Features:Cable Tester For Utp Stp Rj45 Rj11.Effective Auto Scan For Missing Wiring, Messy Cable, Open Circuit And Short Circuit.Tel Bnc Test Available (Adapter Needed).Remote Test Cable Up To 1000 Feet In Length (Remote Control Kit Included).Protective Power Switch For Low Power Consumption.High Quality Protective Case Provides Safer Protection.Judge The Continuity Of Cables Or Wires.Trace Cables Or Wires And Diagnose The Break Point.Receive Dial Tone Signal On Cables Or Wires (Telephone Line).Identify The Working Status Of Telephone Line (Ringing , Busy).+ ProductSpecification:Transmitter: 10MaReceiver: 30MaSignal Transfer Mode: Digital SignalSignal Output Level: 8Vp-PPower By: 2 X Dc 9V Batteries (Not Included)Color: As Pictures ShownPackage Weight: 313GPackage Included:1 X Transmitter Cable1 X Receiver Cable1 X Rj11 Cable1 X Rj45 Cable1 X Earphone1 X Cable With Crocodile Clip1 X ToolboxFeaturesSend A Single Continuous Tone Or A Dual Alternating Tone To The Object'S Cables Or Wires.Sleek Design And Easy To Carry. Comes With Earphones That Can Be Used In Noisy Situations.Flexible And Versatile Interface. Sensitive And Adjustable Volume Control.