This network telephone line cable trackers is an indispensable tool for you to check your Electrical wires, landlines etc...It is easy to operate and quickly get the results. If you are looking for this tool, come and have a try, it will not let you down. Features: Find Wires Quickly&Accurately: This wire finder identifies and traces conductors in a bundle of cables without damaging the insulation. And can identify some specific states of the telephone line. Multiple uses: This line finder can make the installation, debugging and maintenance of telephone lines easier, suitable for network cable testing, wiring engineering, telephone line repairs and replacement, etc. Portable Size: This network telephone line cable trackers with the portable size and easy for you to carry around. Storage Bag: Comes with a storage bag to storage the tools and clips, so that they can be neatly packed in the bag and not easy to lose. Shielded Lines Finding: Using the working principle of digital signals, it can solve the problems of shielded lines searching and noise in the search lines, making your work more efficient. Specifications: Material: ABS Power: 2 * 9V batteries (NOT INCLUDED) Working temperature: -10~60 Working humidity: 20%-70&70% Sensors size: 67 * 57 * 23mm / 2.3 * 2.2 * 0.9in Receiver size: 230 * 42 * 25mm / 9.1 * 1.7 * 1.0in Package size: 256 * 120 * 35mm / 10.1 * 4.7 * 1.4in Package weight: 356g / 12.6ounce Packing list: 1 * Sensors 1 * Receiver 1 * User Manual 1 * Carry Bag