The Noyafa NF-198 is a multifunction network cable tester designed for the installation, maintenance, and troubleshooting of communication and data cabling systems. It is used to identify, trace, and verify the continuity of Ethernet, telephone, and other low-voltage cables, helping technicians quickly locate wiring faults such as open circuits, short circuits, crossed wires, and incorrect connections. The device features a transmitter and receiver unit with an easy-to-read display and simple controls for efficient operation. Its compact, lightweight, and durable construction makes it suitable for fieldwork and routine maintenance. The NF-198 supports testing of common cable types, including RJ45 network cables and RJ11 telephone cables, making it ideal for LAN installations, telecom systems, CCTV, security systems,