Features: Discover unparalleled efficiency with the Networking Cable Tester, a multifunctional tool design for precise POE/RJ45 testing and cable trackings, ensuring seamlessly networking connectivities Featuring advanced POE burn out protections, this tester accurately measure cable length, connectivities, and detects short/open circuits for reliable networking setups. Suitable for networking engineers, IT technicians, and users, this device enhances productivity and accuracy in networking construction and maintenance tasks. Perfect for networking installation, troubleshooting, and routine maintenance, it ensures optimals performances of networking cables and POE devices like cameras and access point. Its portable design and long last battery make it a convenient choice for on the go diagnostics, compatible for various cable types including Cat5e, Cat6, and Cat6a, suitable for home, office, and industrial environment. Specifications: Component:Plastic Size:Approx126x49mm/4.96x1.92inch 175x42mm/6.88x1.65inch Power:DC9V Current:10mA Signal Transmission Distance:3.0km Package Includes: 1pc Cable Tester 1pc Earphone 2pcs Cable 1pc Manual note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.