Features: This item is designed for cable network system installation and network technician to diagnostics networks problem. Wire finding is a major unique function where other cable checkers do not have it, it can locate up to 3000m long wire or cable even in a complex PC network or telephone system. It also has a built-in LAN cable mapping function, to quickly diagnostics LAN cable condition and to identify fault point or broken connection. Bright red LED torch and External Earphone support is value added function to enable service technician to work conveniently and comfortably in dark and noisy environment. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Size: As picture show Package List: 1 Set LAN-Network Cable Tester