Features: The Networking Cable Tester is tool that supports long distances testing with detachable main and remote unit, allowing for testing distances up to 1000meters, making it for comprehensive Networking diagnostics. Equipped with RJ11 Port, this tester can efficiently check telephone lines, supporting two cores, four cores, and six cores configuration, while its LED indicators provide clear feedback on wire Continuitys and sequences alignment. for Networking engineers, IT technicians, home users, and electricians, this device offer professional functionality for those who require precise cable testing and troubleshooting capabilities. for use in offices, server room, home networking, and telephone line maintenance, the ensures performances across various and applications. With signal detection and ability to test both UTP/STP cables, this Networking cable mapper is essential tool for maintaining efficient Networking connection, ensuring your infrastructure runs smoothly. Specifications: Materials: Plastic Package Includes: 1PC Networking Cable Tester note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differenceS between different monitors, the picture may not reflect the actual of the item. Thank you!