Etake Multifunctional Network RJ45 BNC Coaxial CCTV Cable Tester, GND Tester Signal Tester Test Tool Network Interface Card  (Multicolor)

this allows to check the proper install and the order of wires of the RJ-45 plug and can also tests if there is a signal between two ends of the coaxial cable with BNC plugs. The test can be made with two speeds. To test the cable the Main Tester must be connected to the one plug of the cable and the Remote to the other one