Comprehensive Testing Capabilities: This versatile cable tester is equipped with a variety of functions to test compatible cables, RJ45 network cables, and more, ensuring all your cables are installed correctly and securely. Advanced POE Protection: Built-in POE (Power over Ethernet) protection prevents overvoltage damage, protecting your devices during testing. Portable and Battery-Powered: Designed for mobile diagnostics, this tester is battery-powered for easy use anywhere, eliminating the need for an external power source. Multiple Connector Support: Compatible with 8P8C and 6P8C connectors, this tool can test a wide variety of network cables, enhancing its usefulness for network technicians. Efficient Transceiver System: Includes a transmitter and receiver to help identify cable connectivity, faults, and wiring errors within and within individual cables. Color: Red Material: ABS Package Contents: 2 * cable testers (The product does not come with 1 x AAA battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.