Professional Wire TrackerThis professional wire tracking kit is the latest specialized instrument for tracking various commonly used cables and wires. The set consists of a transmitter and a receiver and the pair allows us to find targeted wires much quickly and accurately. Multiple Cable Tracking: This tracker can be used to trace a wide range of cables, including telephone cables, network cables, TV cables and other low current electrical cables. How to use1 Find the wire on all kinds of switch/router/ PC terminal connected. 2. Quickly insert the target wire among lots of cables. 3. Compare the volume of the "all" sound and the brightness of the signal indicator. Then you can find the target wire which has the highest volume and the brightest indicator. Multi-function cable tester: it has other useful functions, including continuity testing of network cables, bonding open/short wiring sequence and DC level testing. Widely ApplicableThis instrument set is an ideal tool for technicians in the installation and maintenance of low current systems such as communication line and complete wiring circuit. It is widely applicable to telephone systems, computer networks and other metal wire circuits and fields. Specifications: The max working current: Transmitter: Appearance dimension: 175*40*21mm (receiver); 125*46*28mm(transmitter). Color: Red