Features [Multifunctional] This line finder can test telephone lines and network cables, shielded cables can also be tested. [High Accuracy] The cable tester has high accuracy and low error, adopts automatic scanning mode, can quickly test, and the indicator light is smoothed. [Stable Performance] Environmental protection shell, high quality chips, uniform brightness of LED lights, stable performance of two layer PCB circuit board. [Durable Material] The cable tester is made of high quality ABS material, durable, safe, and can be used for a long time. [Widely Application] Widely used in community networks, fiber optic users, intelligent broadband, surveillance security, construction sites, etc. Specification: Item Type: Line Finder Material: ABS Battery: 2 x 1.5V AAA (Battery Not Included) Application: Can use a variety of work environments, community networks, campus enterprise networks, fiber optic users, intelligent broadband, surveillance security and other fields Support Language: English Interface: RJ45/RJ11 Package List:1 x Cable Tester (Battery Not Included) 1 x Manual Note:1. This tester cannot test the network cable (for example, it cannot be used on the POE switch) and the telephone line with power on, otherwise the machine will be seriously burned out2. This tester uses high quality batteries. If the lights are dimmed or the lights do not move, please replace the batteries (please dispose of the used batteries in the dedicated recycling bin)3. The RJ45 head copper clip cannot be tested when it is not completely pressed down, otherwise the port will be permanently damaged4. Please use original crimping tools with good quality5. For ports without RJ11, the telephone connection (RJ11) cannot be tested, otherwise the port pins will be permanently damaged Package List 1 x Cable Tester (Battery Not Included) 1 x Manual