Feature:1. Test: The cable tester can test 4 kinds of lines, can test RJ11, RJ45, BNC USB line, simple one key test, test the installed cable or jumper, the remote component is placed in the host.2. Built in Battery Device Port: The remote part of the cable tester is placed in the host, and the built in battery device port.3. Multiple Functions: The cable tester has functions such as automatic scanning and testing of network lines, checking the correctness of jumpers, short circuits, and the sequence of core wires.4. LED Light: This cable tester has a bright and clear LED light, which can display connections and faults with clear instructions.5. Buzzer Provides Test Results: This is a cable tester with buzzer, which can provide audible test results.Specification:Item Type: Network Cable TesterMaterial: ABSBNC Terminator: 25 Ohm/50 Ohm.. IndicationMaximum Cable Length: 1000ftOpen Short Circuit TestPower Supply: 9V Alkaline Battery (Shipped Without Battery)Application: The 4 in 1 multifunction tester is a multifunction network tester that integrates 4 functions, which can test telephone lines, network cables, USB cables, and BNC cables,and can quickly connect open circuits, short circuits, and reverse connections. test. By using the attached remote terminator (the tester), the cable can be easily tested before and after the cable is installed, easy to use and powerful, which is now an indispensable professional tool for engineers, professional maintainers, and inspectors..Package List:1 x Cable Wire Tester1 x Storage Case1 x Accessories 1 x English User ManualNote:The cable wire tester does not have batteries