... UTP 5E /6E cable, telephone line, BNC cable, USB signal line;2. Use crosstalk test to solve ... Judge the open circuit point, and the net line crystal head open point ( left, right or middle ... and telephone lineProduct features:1. The results display in the LCD directly;2. Bring RJ45,RJ11 ... Computer, telephone, TV network line project;3. Other metal wire line engineering and maintenance;Package items utp ...