Specification: Name: Network cable connector. Interface end: RJ45+RJ11. Material: ABS resin. Net Weight: 98g(without battery). Size: 9.7 x 2.7 x 10.3cm/3.82 x 1 x 4 inch. Batteries Included: No. Features: Free choice of two speeds:The default boot is a constant speedtest， and the fast S gear can be adjusted manually. Network cable pairing instrument: Line on-off error checking point， wiring network engineering monitoring line maintenance Network cable pairing instrument :Check on and off, Test shielded network cable, Long distance test. Removable split structure: Sliding freely in the direction of the a mow to sep a rate, combined into one and easy to operate. Note: Well connected: 1 to 8 lights up in sequence. Bad connection: If the 4coreis not bright the 4core will not work. Package included: 1 x Cable Lan Tester