Ensure your network is running smoothly with our RJ45 Network Cable Tester. Designed for both Ethernet and telephone lines, this versatile tool tests UTP and shielded RJ45 cables, including Cat5e, Cat6, Cat6a, and Cat7, as well as RJ11 and RJ12 telephone lines. The automatic operation feature activates upon cable insertion, with LED indicators displaying status and quickly identifying issues such as short circuits, open circuits, and cross lines. The tester includes a master unit and a remote unit, allowing for convenient testing of cables with ends in different locations, with a maximum range of approximately 100 meters. Equipped with gold-plated shielded sockets, this cable tester offers enhanced oxidation resistance, rust prevention, and durability, ensuring a longer service life and reliable performance. Constructed from environmentally friendly high-resin material, the outer shell provides drop resistance and durability, making it a sturdy and long-lasting tool for network diagnostics. Utilizing advanced lighting emitting diodes, this tester clearly and quickly identifies the positions of wrongly-configured wires, ensuring accurate and efficient troubleshooting. Whether you're a professional network technician or a DIY enthusiast, this cable tester is an essential tool for maintaining a reliable and efficient network.