BS-468 network cable tester is designed to test RJ45 (Ethernet) and RJ11 (telephone) cables.It consists of a main master unit and a detachable remote unit, both featuring LED indicators to display connection status.The device helps identify faults such as open circuits, short circuits, or incorrect wiring (crossed wires).It operates using a 9V battery (not included) and has a switch for choosing between slow (S) or fast automatic testing speeds.