LAN testers are a cable testing network control for testing cat5, cat6, and RJ11 cable Terminations  This LAN tester can be used in the workplace and are ideal for technical service professionals and network administrators.

These LAN testers can determine. e IP addresses, identify polarity, connected port, and link connectivity.

The LAN tester mainly used for; LAN tester is mainly used for testing ethernet cables for faults or missing pair connections. Advances  LAN tester can also test the ethernet cable for shorted pairs and can also tell you if the cable is straight or a cross-over. They may have the ability to test coaxial cable as well. They can tell you if the co-axial cable is terminated at the end or not.