User-friendly interface: The tester interface is intuitive and easy to use for professionals and novices alike. COMPACT DESIGN: This network cable tester features a portable design, perfect for on-site troubleshooting. CONVENIENT ACCESSORIES: A small plastic sleeve for RJ45 jacks is included, enhancing the tester's versatility in RJ11 testing. Versatile Connectivity: Supports both RJ11 and RJ45 cables, ensuring compatibility with a wide range of network devices. Efficient testing: features a fast and correct testing mechanism for quick and reliable network diagnostics. Power Supply:1 x 9V battery (Not included batteries) Color:Black & Blue Material:plastic Package Contents: 1set * network cable tester 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.