Cable Tester, ELEGIANT Multifunctions Telephone Network Phone Cable Wire Tracker for Telecommunications Detection Networking Tools (black) Cable hunting : Directly hunt the cable with RJ11, RJ45 and BNC terminal and other metal leads through adaptor. When cable is hunted, there is no need to strip off cable sheath, which is easy and quick to judge the location of breakpoint in cable. It Test network cable : It can fully test the line sequence of network cable, open circuit, short-circuit, miswire, reverse connection and splitpaires. Test line level, positive and negative polarity. Test the status of telephone line : It can test the working status of telephone line (idle, ringing, and off-hook) and judge TIP or RING line Check lead continuity. Test the connection between network cable and switch port.