The LAN ScoutT Jr. 2 cable tester is used to test installed or loose data (CAT 5e, CAT 6/6A) cables that are connected to RJ45 connectors. It is also suitable for locating cables with multiple audio frequencies. The larger display has a backlight for better readability in poor lighting conditions. This model uses 2 x AAA batteries (included). Three buttons ensure an intuitive user interface.