The KOLSOL NF-8601S TDR Network LCD Cable Tester is a versatile tool for testing and troubleshooting various types of network cables, including RJ45, RJ11, BNC, and metal cables. With its LCD screen and PING test function, it provides clear and accurate results for finding cable faults and identifying PoE connections. This model operates on a lithium battery and has a compact design for easy portability and use. The NF-8601S also has a tone frequency of 130KHz and a range of testing cable up to 2000 meters, making it a reliable option for professional networking technicians.