Check the line device (for tracking under the condition of no power of all metal cables, and can connect any switches, routers, PC terminal case directly to the line; used to determine the state of the line, the fault line identification; network installation and maintenance of practical tools.

1. when tracing the cable line, it is not necessary to peel off the outer skin of the line, it is simple, fast and can judge the location of the line break point

2. can find the line directly when connecting any Ethernet switch and router

3. can be used to find any metal cable line

4. to support the switch in the state of line order proofreading

5. can completely replace the network tester

6. transmitter has low voltage prompt function, receiver has lighting function wire laying tool