... Test the connect status of STP/UTP 5E /6E cable, telephone line, BNC cable, USB signal line;2. Use crosstalk test ... ( left, right or middle );5. Test lived router and telephone lineProduct features:1. The results display in the LCD directly ... . Telecommunications network cabling engineering and daily networkmaintenance;2. Computer, telephone, TV network line project;3. Other metal wire line engineering ...