Ethernet LAN Cable Tester - kenable

This tester is designed to test Ethernet cables with RJ45 connectors and coaxial cables with BNC connectors. It can also test RJ11 phone cables.

It can detect open circuits, short circuits, miswires, and crossovers in the cable's wiring.

Yes, most models require batteries (commonly a 9V battery) to operate. Please check the product specifications for the exact battery type required.

No, this tester is for identifying wiring faults and continuity. It does not measure cable length.

The removable remote unit allows you to test long cable runs or cables installed within walls. You can connect one end to the main unit and the other end (with the remote unit) at the far termination point.

No, this tester checks for physical connection integrity and correct wiring. It does not perform speed tests or evaluate signal quality.

The LED indicators on the main unit light up sequentially (usually 1 through 8 for RJ45). If the LEDs light up in the correct order on both the main and remote units (when used), the cable is wired correctly according to the standard it was terminated with.

Check and replace the battery. Ensure the battery is installed correctly. Verify the cable is securely plugged into both the main unit and the remote unit (if used).

The cable may be broken internally, or one or both ends may not be properly terminated. Re-terminate the cable ends or replace the cable.

Two or more conductors are touching. Inspect the termination points at both ends of the cable for stray wire strands or improper connections. Re-terminate if necessary.

This often indicates a miswire or crossover. Verify the wiring standard (e.g., T568A or T568B) used at both ends matches the expected configuration. Re-terminate if the wiring is incorrect.

Ensure the remote unit is properly connected to the cable. If the remote unit has its own power source (less common), check it. The cable connecting the main and remote units might have an issue, or the remote unit itself might be faulty.