Description: Useful device: This network cable tester is designed to test the network cable and detect a fault and is easy to use. Convenient to use: This network cable testing device is designed with RJ45 and RJ11 ports and is suitable for most types of LAN network cable. Portable: This network RJ45 RJ11 wire tester is small and compact, and won't take much space, so you can easily carry or store it. Suitable places: This RJ45 cable diagnose device is a good fit for home, office, hotel, school and any place that needs a network connection. Strong body: This LAN network cable detector is designed with a ABS plastic housing and is robust and not easy to be damaged. Specification: Material: ABS plastic. Color: Black, yellow. Size(LxWxH): Approx. 103x97x27mm/4.06x3.82x1.06 inch. Battery: 9V, 6F22 battery(Not included). Port: RJ45+RJ11. Note: There might be a bit of color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Network Tester