【Efficient Network Cable Tracer】--- This Wire Tracer Comes with an Emitter and a Receiver, Can Quickly and Accurately Track and Find Out the Required Cable Pairs Among Numerous Ones. Note: Does Not Support Testing of Live Wires 【Multiple Functions】--- Perform Continuity Testing, Network Cable Sequence Collation, Open/Short Circuit Testing, and DC Level Testing. Diagnose and Fix Cable Issues with Ease Using This Versatile and Reliable Tool 【Sound Alarm and LED Signal Indicator】--- The Receiver Have both Sound and LED Signal Indicators. By Comparing the Volume of the Sound and the Brightness of LED, You Can Find the Target Wire with the Highest Volume and Brightness LED Signal Indicator. Note: Turn up the Volume before Tracing the Network Cable 【Easy to Use】--- The Function of LED Flashlight, Low Battery Indication and Earphone, Allows for more Focused Testing in Noisy and Dark Surroundings 【Widely Used】--- This Cable Tracker Can be Used to Trace a Wide Range of Cable Including Telephone Wire, Computer Network Cable, TV Cable and etc. Perfect for Professionals and DIY Enthusiasts Alike, and Is Suitable for Use in Computer Network Engineering, Home Network Installation, Telecommunications Maintenance Applications, Weight: 0.881849048 pounds, Manufacturer: Proster