... functions:1. Test the connect status of STP/UTP 5E /6E cable, telephone line, BNC cable, USB signal line;2. Use ... net turn to be slowly ; 3. Measure the cable length, length range 0-1200meters;4. Judge the open ... Bring RJ45,RJ11,USB,BNC ports and alligator adapter cable with RJ11port;3. When the voltage is low, ... metal wire line engineering and maintenance;Package items cable connection status tester